Actualización

app/Resources/public/assets/i18next/.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/env", "@babel/react"]
+}

app/Resources/public/assets/i18next/.bower.json

@@ -0,0 +1,14 @@
+{
+  "name": "i18next",
+  "homepage": "https://github.com/i18next/i18next",
+  "version": "19.5.1",
+  "_release": "19.5.1",
+  "_resolution": {
+    "type": "version",
+    "tag": "v19.5.1",
+    "commit": "bc31ddd478eba54d7bbf3b52997ec4379498611a"
+  },
+  "_source": "https://github.com/i18next/i18next.git",
+  "_target": ">=2.4.0",
+  "_originalSource": "i18next"
+}

app/Resources/public/assets/i18next/.codeclimate.yml

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+engines:
+  duplication:
+    enabled: true
+    config:
+      languages:
+        - ruby
+        - javascript:
+            mass_threshold: 58
+        - python
+        - php
+  eslint:
+    enabled: true
+  fixme:
+    enabled: true
+ratings:
+  paths:
+    - 'src/**/*'
+exclude_paths:
+  - test/
+  - coverage/
+  - dist/
+  - 'i18next.js'
+  - 'i18next.min.js'
+  - 'index.d.ts'
+  - 'rollup.config.js'
+  - 'karma.conf.js'
+  - 'karma.backward.conf.js'
+checks:
+  file-lines:
+    config:
+      threshold: 300
+  method-lines:
+    config:
+      threshold: 70
+  complex-logic:
+    config:
+      threshold: 5
+  nested-control-flow:
+    config:
+      threshold: 5

app/Resources/public/assets/i18next/.coveralls.yml

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+repo_token: SHBhCq4BLOpxJww3DG6g7dtKcuhG62zcK

app/Resources/public/assets/i18next/.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+root = true
+
+[*.{js,jsx,json}]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2

app/Resources/public/assets/i18next/.eslintignore

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+**/dist/*
+**/node_modules/*
+**/*.min.*

app/Resources/public/assets/i18next/.eslintrc

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+parser: babel-eslint
+extends: 
+  - airbnb
+  - prettier
+
+rules:
+  max-len: [0, 100]
+  no-constant-condition: 0
+  arrow-body-style: [1, "as-needed"]
+  comma-dangle: [2, "never"]
+  padded-blocks: [0, "never"]
+  no-unused-vars: [2, {vars: all, args: none}]
+  prefer-arrow-callback: 1
+  no-plusplus: 0
+  no-param-reassign: 0
+  no-unused-expressions: 1
+  react/prop-types:
+    - 0
+    - ignore: #coming from hoc
+      - location
+      - fields
+      - handleSubmit
+
+globals:
+  expect: true
+  describe: true
+  it: true
+  before: true
+  after: true
+  window: true

app/Resources/public/assets/i18next/.gitignore

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+# Ignore specific files
+.settings.xml
+.monitor
+.DS_Store
+*.orig
+npm-debug.log
+npm-debug.log.*
+*.dat
+.vscode
+
+# Ignore various temporary files
+*~
+*.swp
+
+
+# Ignore various Node.js related directories and files
+node_modules
+node_modules/**/*
+coverage/**/*
+dist/**/*
+
+# Ignore IntelliJ based IDEs project files
+.idea

app/Resources/public/assets/i18next/.npmignore

@@ -0,0 +1,24 @@
+src/
+test/
+coverage/
+assets/
+.circleci/
+.babelrc
+.editorconfig
+.eslintignore
+.eslintrc
+.gitignore
+bower.json
+gulpfile.js
+karma.conf.js
+karma.backward.conf.js
+sample.html
+.codeclimate.yml
+.coveralls.yml
+tsconfig.json
+.prettierignore
+.prettierrc
+rollup.config.js
+tsconfig.nonEsModuleInterop
+tslint.json
+CHANGELOG.md

app/Resources/public/assets/i18next/.prettierignore

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+i18next.js
+i18next.min.js
+src/PluralResolver.js

app/Resources/public/assets/i18next/.prettierrc

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+{
+  "bracketSpacing": true,
+  "jsxBracketSameLine": false,
+  "printWidth": 100,
+  "semi": true,
+  "singleQuote": true,
+  "trailingComma": "all"
+}

app/Resources/public/assets/i18next/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 i18next
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

app/Resources/public/assets/i18next/README.md

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+# i18next: learn once - translate everywhere [![Tweet](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=Awesome%20i18next:%20learn%20once%20-%20translate%20everywhere%20-%20the%20internationalization%20ecosystem%20&url=https://github.com/i18next/i18next&via=jamuhl&hashtags=i18n,javascript,dev)
+
+[![CircleCI](https://circleci.com/gh/i18next/i18next.svg?style=svg)](https://circleci.com/gh/i18next/i18next)
+[![Code Climate](https://codeclimate.com/github/codeclimate/codeclimate/badges/gpa.svg)](https://codeclimate.com/github/i18next/i18next)
+[![Coveralls](https://img.shields.io/coveralls/i18next/i18next/master.svg?style=flat-square)](https://coveralls.io/github/i18next/i18next)
+[![Package Quality](http://npm.packagequality.com/shield/i18next.svg)](http://packagequality.com/#?package=i18next)
+[![cdnjs version](https://img.shields.io/cdnjs/v/i18next.svg?style=flat-square)](https://cdnjs.com/libraries/i18next)
+[![npm version](https://img.shields.io/npm/v/i18next.svg?style=flat-square)](https://www.npmjs.com/package/i18next)
+[![David](https://img.shields.io/david/i18next/i18next.svg?style=flat-square)](https://david-dm.org/i18next/i18next)
+
+i18next is a very popular internationalization framework for browser or any other javascript environment (eg. node.js).
+
+![ecosystem](https://raw.githubusercontent.com/i18next/i18next/master/assets/i18next-ecosystem.jpg)
+
+i18next provides:
+
+- Flexible connection to [backend](https://www.i18next.com/plugins-and-utils.html#backends) (loading translations via xhr, ...)
+- Optional [caching](https://www.i18next.com/plugins-and-utils.html#caches), user [language detection](https://www.i18next.com/plugins-and-utils.html#language-detector), ...
+- Proper [pluralizations](https://www.i18next.com/plurals.html)
+- Translation [context](https://www.i18next.com/context.html)
+- [Nesting](https://www.i18next.com/nesting.html), [Variable replacement](https://www.i18next.com/interpolation.html)
+- Flexibility: [Use it everywhere](https://www.i18next.com/supported-frameworks.html)
+- Extensibility: eg. [sprintf](https://www.i18next.com/plugins-and-utils.html#post-processors)
+- ...
+
+For more information visit the website:
+
+- [Getting started](https://www.i18next.com/getting-started.html)
+- [Translation Functionality](https://www.i18next.com/essentials.html)
+- [API](https://www.i18next.com/api.html)
+
+Our focus is providing the core to building a booming ecosystem. Independent of the building blocks you choose, be it react, angular or even good old jquery proper translation capabilities are just [one step away](https://www.i18next.com/supported-frameworks.html).
+
+---
+
+<h3 align="center">Gold Sponsors</h3>
+
+<p align="center">
+  <a href="https://locize.com/" target="_blank">
+    <img src="https://raw.githubusercontent.com/i18next/i18next/master/assets/locize_sponsor_240.gif" width="240px">
+  </a>
+</p>
+
+---
+
+**From the creators of i18next: localization as a service - locize.com**
+
+A translation management system built around the i18next ecosystem - [locize.com](https://locize.com).
+
+![locize](https://locize.com/img/ads/github_locize.png)
+
+With using [locize](http://locize.com/?utm_source=i18next_readme&utm_medium=github) you directly support the future of i18next.
+
+---

app/Resources/public/assets/i18next/index.js

@@ -0,0 +1,5 @@
+/* eslint no-var: 0 */
+var main = require('./dist/cjs/i18next.js');
+
+module.exports = main;
+module.exports.default = main;

app/Resources/public/assets/i18next/karma.backward.conf.js

@@ -0,0 +1,50 @@
+module.exports = function(karma) {
+  karma.set({
+    frameworks: ['mocha', 'expect', 'sinon', 'browserify'],
+
+    files: [
+      //'vendor/external.js',
+      'test/backward/**/*.compat.js',
+      { pattern: 'test/backward/locales/**/*.json', watched: true, included: false, served: true },
+    ],
+
+    proxies: {
+      '/locales': 'http://localhost:9877/base/test/backward/locales',
+    },
+
+    reporters: ['spec'],
+
+    preprocessors: {
+      'test/backward/**/*.compat.js': ['browserify'],
+      'test/backward/compatibility/**/*.js': ['browserify'],
+    },
+
+    browsers: ['HeadlessChrome'],
+    customLaunchers: {
+      HeadlessChrome: {
+        base: 'ChromeHeadless',
+        flags: ['—no-sandbox'],
+      },
+    },
+
+    port: 9877,
+
+    //logLevel: 'LOG_DEBUG',
+
+    //singleRun: true,
+    //autoWatch: false,
+    //
+    // client: {
+    //   mocha: {
+    //     reporter: 'spec', // change Karma's debug.html to the mocha web reporter
+    //     ui: 'tdd'
+    //   }
+    // },
+
+    // browserify configuration
+    browserify: {
+      debug: true,
+      transform: [['babelify', { presets: ['@babel/preset-env'] }] /*, 'brfs' */],
+    },
+  });
+};

app/Resources/public/assets/i18next/karma.conf.js

@@ -0,0 +1,60 @@
+//const istanbul = require( 'browserify-istanbul' );
+
+module.exports = function(karma) {
+  karma.set({
+    frameworks: ['mocha', 'chai', 'sinon', 'browserify'],
+
+    files: [
+      //'vendor/external.js',
+      'test/**/*.spec.js',
+      { pattern: 'test/locales/**/*.json', watched: true, included: false, served: true },
+    ],
+
+    proxies: {
+      '/locales': 'http://localhost:9876/base/test/locales',
+    },
+
+    reporters: ['coverage', 'coveralls', 'spec'],
+
+    preprocessors: {
+      'test/**/*.spec.js': ['browserify'],
+      'src/**/*.js': ['browserify', 'coverage'],
+    },
+
+    browsers: ['HeadlessChrome'],
+    customLaunchers: {
+      HeadlessChrome: {
+        base: 'ChromeHeadless',
+        flags: ['—no-sandbox'],
+      },
+    },
+
+    port: 9876,
+
+    //logLevel: 'LOG_DEBUG',
+
+    //singleRun: true,
+    //autoWatch: false,
+    //
+    // client: {
+    //   mocha: {
+    //     reporter: 'spec', // change Karma's debug.html to the mocha web reporter
+    //     ui: 'tdd'
+    //   }
+    // },
+
+    // browserify configuration
+    browserify: {
+      debug: true,
+      transform: [
+        ['babelify', { presets: ['@babel/preset-env'] }],
+        /*'brfs',*/ 'browserify-istanbul',
+      ],
+    },
+
+    coverageReporter: {
+      type: 'lcov', //'html', // disabled - erroring now, https://github.com/karma-runner/karma-coverage/issues/157
+      dir: 'coverage/',
+    },
+  });
+};

app/Resources/public/assets/i18next/package.json

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+{
+  "name": "i18next",
+  "version": "19.5.1",
+  "description": "i18next internationalization framework",
+  "main": "./dist/cjs/i18next.js",
+  "module": "./dist/esm/i18next.js",
+  "types": "./index.d.ts",
+  "keywords": [
+    "i18next",
+    "internationalization",
+    "i18n",
+    "translation",
+    "localization",
+    "l10n",
+    "globalization",
+    "gettext"
+  ],
+  "homepage": "http://i18next.com",
+  "bugs": "https://github.com/i18next/i18next/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/i18next/i18next.git"
+  },
+  "dependencies": {
+    "@babel/runtime": "^7.10.1"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.10.1",
+    "@babel/plugin-proposal-async-generator-functions": "^7.2.0",
+    "@babel/plugin-proposal-object-rest-spread": "^7.3.2",
+    "@babel/plugin-transform-modules-commonjs": "^7.2.0",
+    "@babel/plugin-transform-runtime": "^7.2.0",
+    "@babel/polyfill": "^7.2.5",
+    "@babel/preset-env": "^7.3.1",
+    "@babel/preset-react": "^7.0.0",
+    "@babel/register": "^7.0.0",
+    "babel-eslint": "^10.0.1",
+    "babelify": "^10.0.0",
+    "browserify": "14.0.0",
+    "browserify-istanbul": "2.0.0",
+    "chai": "3.5.0",
+    "coveralls": "2.11.16",
+    "cpy-cli": "^2.0.0",
+    "dtslint": "^0.4.2",
+    "eslint": "3.15.0",
+    "eslint-config-airbnb": "14.1.0",
+    "eslint-config-prettier": "^3.6.0",
+    "eslint-plugin-import": "2.2.0",
+    "eslint-plugin-jsx-a11y": "4.0.0",
+    "eslint-plugin-react": "6.9.0",
+    "husky": "^1.3.1",
+    "i18next-browser-languagedetector": "1.0.1",
+    "i18next-localstorage-cache": "0.3.0",
+    "i18next-sprintf-postprocessor": "0.2.2",
+    "i18next-xhr-backend": "1.3.0",
+    "istanbul": "gotwarlost/istanbul#source-map",
+    "karma": "2.0.0",
+    "karma-browserify": "5.1.1",
+    "karma-chai": "0.1.0",
+    "karma-chrome-launcher": "2.2.0",
+    "karma-cli": "1.0.1",
+    "karma-coverage": "douglasduteil/karma-coverage#next",
+    "karma-coveralls": "1.1.2",
+    "karma-expect": "1.1.3",
+    "karma-mocha": "1.3.0",
+    "karma-rollup-preprocessor": "3.0.3",
+    "karma-sinon": "1.0.5",
+    "karma-spec-reporter": "0.0.26",
+    "lint-staged": "^8.1.0",
+    "mocha": "3.2.0",
+    "prettier": "^1.15.3",
+    "rimraf": "2.5.4",
+    "rollup": "1.1.2",
+    "rollup-plugin-babel": "^4.3.2",
+    "rollup-plugin-commonjs": "^9.2.0",
+    "rollup-plugin-node-resolve": "4.0.0",
+    "rollup-plugin-terser": "^4.0.4",
+    "sinon": "1.17.7",
+    "tslint": "^5.12.1",
+    "typescript": "^3.6.4",
+    "watchify": "3.9.0"
+  },
+  "scripts": {
+    "pretest": "npm run test:typescript && npm run test:typescript:noninterop",
+    "test": "npm run test:new && npm run test:compat",
+    "test:new": "karma start karma.conf.js --singleRun",
+    "test:compat": "karma start karma.backward.conf.js --singleRun",
+    "test:typescript": "tslint --project tsconfig.json",
+    "test:typescript:noninterop": "tslint --project tsconfig.nonEsModuleInterop.json",
+    "tdd": "karma start karma.conf.js",
+    "tdd:compat": "karma start karma.backward.conf.js",
+    "build": "rimraf dist && rollup -c && cpy \"./dist/umd/*.js\" ./",
+    "preversion": "npm run test && npm run build && git push",
+    "postversion": "git push && git push --tags",
+    "prettier": "prettier --write \"{,**/}*.{ts,tsx,js,json,md}\""
+  },
+  "author": "Jan Mühlemann <jan.muehlemann@gmail.com> (https://github.com/jamuhl)",
+  "license": "MIT",
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "linters": {
+      "*.{ts,tsx,js,json,md}": [
+        "prettier --write",
+        "git add"
+      ]
+    },
+    "ignore": [
+      "**/i18next.js",
+      "**/i18next.min.js"
+    ]
+  }
+}

app/Resources/public/assets/i18next/rollup.config.js

@@ -0,0 +1,43 @@
+import babel from 'rollup-plugin-babel';
+import nodeResolve from 'rollup-plugin-node-resolve';
+import { terser } from 'rollup-plugin-terser';
+import pkg from './package.json';
+
+const getBabelOptions = ({ useESModules }) => ({
+  exclude: /node_modules/,
+  runtimeHelpers: true,
+  plugins: [['@babel/transform-runtime', { useESModules }]],
+  comments: false,
+});
+
+const input = './src/index.js';
+const name = 'i18next';
+// check relative and absolute paths for windows and unix
+const external = id => !id.startsWith('.') && !id.startsWith('/') && !id.includes(':');
+
+export default [
+  {
+    input,
+    output: { format: 'cjs', file: pkg.main },
+    external,
+    plugins: [babel(getBabelOptions({ useESModules: false }))],
+  },
+
+  {
+    input,
+    output: { format: 'esm', file: pkg.module },
+    external,
+    plugins: [babel(getBabelOptions({ useESModules: true }))],
+  },
+
+  {
+    input,
+    output: { format: 'umd', name, file: `dist/umd/${name}.js` },
+    plugins: [babel(getBabelOptions({ useESModules: true })), nodeResolve()],
+  },
+  {
+    input,
+    output: { format: 'umd', name, file: `dist/umd/${name}.min.js` },
+    plugins: [babel(getBabelOptions({ useESModules: true })), nodeResolve(), terser()],
+  },
+];

app/Resources/public/assets/i18next/sample.html

@@ -0,0 +1,44 @@
+<html>
+  <head>
+    <script src="./i18next.min.js" ></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/i18next-browser-languagedetector/1.0.1/i18nextBrowserLanguageDetector.min.js" ></script>
+  </head>
+
+  <body>
+
+    <div>open console</div>
+
+    <script>
+      // use plugins and options as needed, for options, detail see
+      // http://i18next.com/docs/
+      i18next
+      .use(window.i18nextBrowserLanguageDetector)
+      .init({
+        //lng: 'en', // evtl. use language-detector https://github.com/i18next/i18next-browser-languageDetector
+        resources: { // evtl. load via xhr https://github.com/i18next/i18next-xhr-backend
+          en: {
+            translation: {
+              input: {
+                placeholder: "a placeholder"
+              },
+              nav: {
+                home: 'Home',
+                page1: 'Page One',
+                page2: 'Page Two'
+              }
+            }
+          }
+        },
+        debug: true
+      }, function(err, t) {
+        var fixedT = i18next.getFixedT(null, null);
+        console.warn(fixedT('nav.page3', 'support'), fixedT('nav.page3', 'support') === 'support');
+        console.warn(i18next.t('input.placeholder'), i18next.t('input.placeholder') === 'a placeholder');
+        console.warn(i18next.t('nav.home'), i18next.t('nav.home') === 'Home');
+        console.warn(i18next);
+      });
+    </script>
+
+  </body>
+
+</html>

app/Resources/public/assets/i18next/src/BackendConnector.js

@@ -0,0 +1,224 @@
+import * as utils from './utils.js';
+import baseLogger from './logger.js';
+import EventEmitter from './EventEmitter.js';
+
+function remove(arr, what) {
+  let found = arr.indexOf(what);
+
+  while (found !== -1) {
+    arr.splice(found, 1);
+    found = arr.indexOf(what);
+  }
+}
+
+class Connector extends EventEmitter {
+  constructor(backend, store, services, options = {}) {
+    super();
+    if (utils.isIE10) {
+      EventEmitter.call(this); // <=IE10 fix (unable to call parent constructor)
+    }
+
+    this.backend = backend;
+    this.store = store;
+    this.services = services;
+    this.languageUtils = services.languageUtils;
+    this.options = options;
+    this.logger = baseLogger.create('backendConnector');
+
+    this.state = {};
+    this.queue = [];
+
+    if (this.backend && this.backend.init) {
+      this.backend.init(services, options.backend, options);
+    }
+  }
+
+  queueLoad(languages, namespaces, options, callback) {
+    // find what needs to be loaded
+    const toLoad = [];
+    const pending = [];
+    const toLoadLanguages = [];
+    const toLoadNamespaces = [];
+
+    languages.forEach(lng => {
+      let hasAllNamespaces = true;
+
+      namespaces.forEach(ns => {
+        const name = `${lng}|${ns}`;
+
+        if (!options.reload && this.store.hasResourceBundle(lng, ns)) {
+          this.state[name] = 2; // loaded
+        } else if (this.state[name] < 0) {
+          // nothing to do for err
+        } else if (this.state[name] === 1) {
+          if (pending.indexOf(name) < 0) pending.push(name);
+        } else {
+          this.state[name] = 1; // pending
+
+          hasAllNamespaces = false;
+
+          if (pending.indexOf(name) < 0) pending.push(name);
+          if (toLoad.indexOf(name) < 0) toLoad.push(name);
+          if (toLoadNamespaces.indexOf(ns) < 0) toLoadNamespaces.push(ns);
+        }
+      });
+
+      if (!hasAllNamespaces) toLoadLanguages.push(lng);
+    });
+
+    if (toLoad.length || pending.length) {
+      this.queue.push({
+        pending,
+        loaded: {},
+        errors: [],
+        callback,
+      });
+    }
+
+    return {
+      toLoad,
+      pending,
+      toLoadLanguages,
+      toLoadNamespaces,
+    };
+  }
+
+  loaded(name, err, data) {
+    const s = name.split('|');
+    const lng = s[0];
+    const ns = s[1];
+
+    if (err) this.emit('failedLoading', lng, ns, err);
+
+    if (data) {
+      this.store.addResourceBundle(lng, ns, data);
+    }
+
+    // set loaded
+    this.state[name] = err ? -1 : 2;
+
+    // consolidated loading done in this run - only emit once for a loaded namespace
+    const loaded = {};
+
+    // callback if ready
+    this.queue.forEach(q => {
+      utils.pushPath(q.loaded, [lng], ns);
+      remove(q.pending, name);
+
+      if (err) q.errors.push(err);
+
+      if (q.pending.length === 0 && !q.done) {
+        // only do once per loaded -> this.emit('loaded', q.loaded);
+        Object.keys(q.loaded).forEach(l => {
+          if (!loaded[l]) loaded[l] = [];
+          if (q.loaded[l].length) {
+            q.loaded[l].forEach(ns => {
+              if (loaded[l].indexOf(ns) < 0) loaded[l].push(ns);
+            });
+          }
+        });
+
+        /* eslint no-param-reassign: 0 */
+        q.done = true;
+        if (q.errors.length) {
+          q.callback(q.errors);
+        } else {
+          q.callback();
+        }
+      }
+    });
+
+    // emit consolidated loaded event
+    this.emit('loaded', loaded);
+
+    // remove done load requests
+    this.queue = this.queue.filter(q => !q.done);
+  }
+
+  read(lng, ns, fcName, tried = 0, wait = 350, callback) {
+    if (!lng.length) return callback(null, {}); // noting to load
+
+    return this.backend[fcName](lng, ns, (err, data) => {
+      if (err && data /* = retryFlag */ && tried < 5) {
+        setTimeout(() => {
+          this.read.call(this, lng, ns, fcName, tried + 1, wait * 2, callback);
+        }, wait);
+        return;
+      }
+      callback(err, data);
+    });
+  }
+
+  /* eslint consistent-return: 0 */
+  prepareLoading(languages, namespaces, options = {}, callback) {
+    if (!this.backend) {
+      this.logger.warn('No backend was added via i18next.use. Will not load resources.');
+      return callback && callback();
+    }
+
+    if (typeof languages === 'string') languages = this.languageUtils.toResolveHierarchy(languages);
+    if (typeof namespaces === 'string') namespaces = [namespaces];
+
+    const toLoad = this.queueLoad(languages, namespaces, options, callback);
+    if (!toLoad.toLoad.length) {
+      if (!toLoad.pending.length) callback(); // nothing to load and no pendings...callback now
+      return null; // pendings will trigger callback
+    }
+
+    toLoad.toLoad.forEach(name => {
+      this.loadOne(name);
+    });
+  }
+
+  load(languages, namespaces, callback) {
+    this.prepareLoading(languages, namespaces, {}, callback);
+  }
+
+  reload(languages, namespaces, callback) {
+    this.prepareLoading(languages, namespaces, { reload: true }, callback);
+  }
+
+  loadOne(name, prefix = '') {
+    const s = name.split('|');
+    const lng = s[0];
+    const ns = s[1];
+
+    this.read(lng, ns, 'read', undefined, undefined, (err, data) => {
+      if (err) this.logger.warn(`${prefix}loading namespace ${ns} for language ${lng} failed`, err);
+      if (!err && data)
+        this.logger.log(`${prefix}loaded namespace ${ns} for language ${lng}`, data);
+
+      this.loaded(name, err, data);
+    });
+  }
+
+  saveMissing(languages, namespace, key, fallbackValue, isUpdate, options = {}) {
+    if (
+      this.services.utils &&
+      this.services.utils.hasLoadedNamespace &&
+      !this.services.utils.hasLoadedNamespace(namespace)
+    ) {
+      this.logger.warn(
+        `did not save key "${key}" as the namespace "${namespace}" was not yet loaded`,
+        'This means something IS WRONG in your setup. You access the t function before i18next.init / i18next.loadNamespace / i18next.changeLanguage was done. Wait for the callback or Promise to resolve before accessing it!!!',
+      );
+      return;
+    }
+
+    // ignore non valid keys
+    if (key === undefined || key === null || key === '') return;
+
+    if (this.backend && this.backend.create) {
+      this.backend.create(languages, namespace, key, fallbackValue, null /* unused callback */, {
+        ...options,
+        isUpdate,
+      });
+    }
+
+    // write to store to avoid resending
+    if (!languages || !languages[0]) return;
+    this.store.addResource(languages[0], namespace, key, fallbackValue);
+  }
+}
+
+export default Connector;

app/Resources/public/assets/i18next/src/EventEmitter.js

@@ -0,0 +1,41 @@
+class EventEmitter {
+  constructor() {
+    this.observers = {};
+  }
+
+  on(events, listener) {
+    events.split(' ').forEach(event => {
+      this.observers[event] = this.observers[event] || [];
+      this.observers[event].push(listener);
+    });
+    return this;
+  }
+
+  off(event, listener) {
+    if (!this.observers[event]) return;
+    if (!listener) {
+      delete this.observers[event];
+      return;
+    }
+
+    this.observers[event] = this.observers[event].filter(l => l !== listener);
+  }
+
+  emit(event, ...args) {
+    if (this.observers[event]) {
+      const cloned = [].concat(this.observers[event]);
+      cloned.forEach(observer => {
+        observer(...args);
+      });
+    }
+
+    if (this.observers['*']) {
+      const cloned = [].concat(this.observers['*']);
+      cloned.forEach(observer => {
+        observer.apply(observer, [event, ...args]);
+      });
+    }
+  }
+}
+
+export default EventEmitter;

app/Resources/public/assets/i18next/src/Interpolator.js

@@ -0,0 +1,232 @@
+import * as utils from './utils.js';
+import baseLogger from './logger.js';
+
+class Interpolator {
+  constructor(options = {}) {
+    this.logger = baseLogger.create('interpolator');
+
+    this.options = options;
+    this.format = (options.interpolation && options.interpolation.format) || (value => value);
+    this.init(options);
+  }
+
+  /* eslint no-param-reassign: 0 */
+  init(options = {}) {
+    if (!options.interpolation) options.interpolation = { escapeValue: true };
+
+    const iOpts = options.interpolation;
+
+    this.escape = iOpts.escape !== undefined ? iOpts.escape : utils.escape;
+    this.escapeValue = iOpts.escapeValue !== undefined ? iOpts.escapeValue : true;
+    this.useRawValueToEscape =
+      iOpts.useRawValueToEscape !== undefined ? iOpts.useRawValueToEscape : false;
+
+    this.prefix = iOpts.prefix ? utils.regexEscape(iOpts.prefix) : iOpts.prefixEscaped || '{{';
+    this.suffix = iOpts.suffix ? utils.regexEscape(iOpts.suffix) : iOpts.suffixEscaped || '}}';
+
+    this.formatSeparator = iOpts.formatSeparator
+      ? iOpts.formatSeparator
+      : iOpts.formatSeparator || ',';
+
+    this.unescapePrefix = iOpts.unescapeSuffix ? '' : iOpts.unescapePrefix || '-';
+    this.unescapeSuffix = this.unescapePrefix ? '' : iOpts.unescapeSuffix || '';
+
+    this.nestingPrefix = iOpts.nestingPrefix
+      ? utils.regexEscape(iOpts.nestingPrefix)
+      : iOpts.nestingPrefixEscaped || utils.regexEscape('$t(');
+    this.nestingSuffix = iOpts.nestingSuffix
+      ? utils.regexEscape(iOpts.nestingSuffix)
+      : iOpts.nestingSuffixEscaped || utils.regexEscape(')');
+
+    this.nestingOptionsSeparator = iOpts.nestingOptionsSeparator
+      ? iOpts.nestingOptionsSeparator
+      : iOpts.nestingOptionsSeparator || ',';
+
+    this.maxReplaces = iOpts.maxReplaces ? iOpts.maxReplaces : 1000;
+
+    this.alwaysFormat = iOpts.alwaysFormat !== undefined ? iOpts.alwaysFormat : false;
+
+    // the regexp
+    this.resetRegExp();
+  }
+
+  reset() {
+    if (this.options) this.init(this.options);
+  }
+
+  resetRegExp() {
+    // the regexp
+    const regexpStr = `${this.prefix}(.+?)${this.suffix}`;
+    this.regexp = new RegExp(regexpStr, 'g');
+
+    const regexpUnescapeStr = `${this.prefix}${this.unescapePrefix}(.+?)${this.unescapeSuffix}${
+      this.suffix
+    }`;
+    this.regexpUnescape = new RegExp(regexpUnescapeStr, 'g');
+
+    const nestingRegexpStr = `${this.nestingPrefix}(.+?)${this.nestingSuffix}`;
+    this.nestingRegexp = new RegExp(nestingRegexpStr, 'g');
+  }
+
+  interpolate(str, data, lng, options) {
+    let match;
+    let value;
+    let replaces;
+
+    const defaultData =
+      (this.options && this.options.interpolation && this.options.interpolation.defaultVariables) ||
+      {};
+
+    function regexSafe(val) {
+      return val.replace(/\$/g, '$$$$');
+    }
+
+    const handleFormat = key => {
+      if (key.indexOf(this.formatSeparator) < 0) {
+        const path = utils.getPathWithDefaults(data, defaultData, key);
+        return this.alwaysFormat ? this.format(path, undefined, lng) : path;
+      }
+
+      const p = key.split(this.formatSeparator);
+      const k = p.shift().trim();
+      const f = p.join(this.formatSeparator).trim();
+
+      return this.format(utils.getPathWithDefaults(data, defaultData, k), f, lng, options);
+    };
+
+    this.resetRegExp();
+
+    const missingInterpolationHandler =
+      (options && options.missingInterpolationHandler) || this.options.missingInterpolationHandler;
+
+    replaces = 0;
+    // unescape if has unescapePrefix/Suffix
+    /* eslint no-cond-assign: 0 */
+    while ((match = this.regexpUnescape.exec(str))) {
+      value = handleFormat(match[1].trim());
+      if (value === undefined) {
+        if (typeof missingInterpolationHandler === 'function') {
+          const temp = missingInterpolationHandler(str, match, options);
+          value = typeof temp === 'string' ? temp : '';
+        } else {
+          this.logger.warn(`missed to pass in variable ${match[1]} for interpolating ${str}`);
+          value = '';
+        }
+      } else if (typeof value !== 'string' && !this.useRawValueToEscape) {
+        value = utils.makeString(value);
+      }
+      str = str.replace(match[0], regexSafe(value));
+      this.regexpUnescape.lastIndex = 0;
+      replaces++;
+      if (replaces >= this.maxReplaces) {
+        break;
+      }
+    }
+
+    replaces = 0;
+    // regular escape on demand
+    while ((match = this.regexp.exec(str))) {
+      value = handleFormat(match[1].trim());
+      if (value === undefined) {
+        if (typeof missingInterpolationHandler === 'function') {
+          const temp = missingInterpolationHandler(str, match, options);
+          value = typeof temp === 'string' ? temp : '';
+        } else {
+          this.logger.warn(`missed to pass in variable ${match[1]} for interpolating ${str}`);
+          value = '';
+        }
+      } else if (typeof value !== 'string' && !this.useRawValueToEscape) {
+        value = utils.makeString(value);
+      }
+      value = this.escapeValue ? regexSafe(this.escape(value)) : regexSafe(value);
+      str = str.replace(match[0], value);
+      this.regexp.lastIndex = 0;
+      replaces++;
+      if (replaces >= this.maxReplaces) {
+        break;
+      }
+    }
+    return str;
+  }
+
+  nest(str, fc, options = {}) {
+    let match;
+    let value;
+
+    let clonedOptions = { ...options };
+    clonedOptions.applyPostProcessor = false; // avoid post processing on nested lookup
+    delete clonedOptions.defaultValue; // assert we do not get a endless loop on interpolating defaultValue again and again
+
+    // if value is something like "myKey": "lorem $(anotherKey, { "count": {{aValueInOptions}} })"
+    function handleHasOptions(key, inheritedOptions) {
+      const sep = this.nestingOptionsSeparator;
+      if (key.indexOf(sep) < 0) return key;
+
+      const c = key.split(new RegExp(`${sep}[ ]*{`));
+
+      let optionsString = `{${c[1]}`;
+      key = c[0];
+      optionsString = this.interpolate(optionsString, clonedOptions);
+      optionsString = optionsString.replace(/'/g, '"');
+
+      try {
+        clonedOptions = JSON.parse(optionsString);
+
+        if (inheritedOptions) clonedOptions = { ...inheritedOptions, ...clonedOptions };
+      } catch (e) {
+        this.logger.warn(`failed parsing options string in nesting for key ${key}`, e);
+        return `${key}${sep}${optionsString}`;
+      }
+
+      // assert we do not get a endless loop on interpolating defaultValue again and again
+      delete clonedOptions.defaultValue;
+      return key;
+    }
+
+    // regular escape on demand
+    while ((match = this.nestingRegexp.exec(str))) {
+      let formatters = [];
+
+      /**
+       * If there is more than one parameter (contains the format separator). E.g.:
+       *   - t(a, b)
+       *   - t(a, b, c)
+       *
+       * And those parameters are not dynamic values (parameters do not include curly braces). E.g.:
+       *   - Not t(a, { "key": "{{variable}}" })
+       *   - Not t(a, b, {"keyA": "valueA", "keyB": "valueB"})
+       */
+      let doReduce = false;
+      if (match[0].includes(this.formatSeparator) && !/{.*}/.test(match[1])) {
+        const r = match[1].split(this.formatSeparator).map(elem => elem.trim());
+        match[1] = r.shift();
+        formatters = r;
+        doReduce = true;
+      }
+
+      value = fc(handleHasOptions.call(this, match[1].trim(), clonedOptions), clonedOptions);
+
+      // is only the nesting key (key1 = '$(key2)') return the value without stringify
+      if (value && match[0] === str && typeof value !== 'string') return value;
+
+      // no string to include or empty
+      if (typeof value !== 'string') value = utils.makeString(value);
+      if (!value) {
+        this.logger.warn(`missed to resolve ${match[1]} for nesting ${str}`);
+        value = '';
+      }
+
+      if (doReduce) {
+        value = formatters.reduce((v, f) => this.format(v, f, options.lng, options), value.trim());
+      }
+
+      // Nested keys should not be escaped by default #854
+      // value = this.escapeValue ? regexSafe(utils.escape(value)) : regexSafe(value);
+      str = str.replace(match[0], value);
+      this.regexp.lastIndex = 0;
+    }
+    return str;
+  }
+}
+
+export default Interpolator;

app/Resources/public/assets/i18next/src/LanguageUtils.js

@@ -0,0 +1,170 @@
+import baseLogger from './logger.js';
+
+function capitalize(string) {
+  return string.charAt(0).toUpperCase() + string.slice(1);
+}
+
+class LanguageUtil {
+  constructor(options) {
+    this.options = options;
+
+    // temporal backwards compatibility WHITELIST REMOVAL
+    this.whitelist = this.options.supportedLngs || false;
+    // end temporal backwards compatibility WHITELIST REMOVAL
+
+    this.supportedLngs = this.options.supportedLngs || false;
+    this.logger = baseLogger.create('languageUtils');
+  }
+
+  getScriptPartFromCode(code) {
+    if (!code || code.indexOf('-') < 0) return null;
+
+    const p = code.split('-');
+    if (p.length === 2) return null;
+    p.pop();
+    if (p[p.length - 1].toLowerCase() === 'x') return null;
+    return this.formatLanguageCode(p.join('-'));
+  }
+
+  getLanguagePartFromCode(code) {
+    if (!code || code.indexOf('-') < 0) return code;
+
+    const p = code.split('-');
+    return this.formatLanguageCode(p[0]);
+  }
+
+  formatLanguageCode(code) {
+    // http://www.iana.org/assignments/language-tags/language-tags.xhtml
+    if (typeof code === 'string' && code.indexOf('-') > -1) {
+      const specialCases = ['hans', 'hant', 'latn', 'cyrl', 'cans', 'mong', 'arab'];
+      let p = code.split('-');
+
+      if (this.options.lowerCaseLng) {
+        p = p.map(part => part.toLowerCase());
+      } else if (p.length === 2) {
+        p[0] = p[0].toLowerCase();
+        p[1] = p[1].toUpperCase();
+
+        if (specialCases.indexOf(p[1].toLowerCase()) > -1) p[1] = capitalize(p[1].toLowerCase());
+      } else if (p.length === 3) {
+        p[0] = p[0].toLowerCase();
+
+        // if lenght 2 guess it's a country
+        if (p[1].length === 2) p[1] = p[1].toUpperCase();
+        if (p[0] !== 'sgn' && p[2].length === 2) p[2] = p[2].toUpperCase();
+
+        if (specialCases.indexOf(p[1].toLowerCase()) > -1) p[1] = capitalize(p[1].toLowerCase());
+        if (specialCases.indexOf(p[2].toLowerCase()) > -1) p[2] = capitalize(p[2].toLowerCase());
+      }
+
+      return p.join('-');
+    }
+
+    return this.options.cleanCode || this.options.lowerCaseLng ? code.toLowerCase() : code;
+  }
+
+  // temporal backwards compatibility WHITELIST REMOVAL
+  isWhitelisted(code) {
+    this.logger.deprecate(
+      'languageUtils.isWhitelisted',
+      'function "isWhitelisted" will be renamed to "isSupportedCode" in the next major - please make sure to rename it\'s usage asap.',
+    );
+
+    return this.isSupportedCode(code);
+  }
+  // end temporal backwards compatibility WHITELIST REMOVAL
+
+  isSupportedCode(code) {
+    if (this.options.load === 'languageOnly' || this.options.nonExplicitSupportedLngs) {
+      code = this.getLanguagePartFromCode(code);
+    }
+    return (
+      !this.supportedLngs || !this.supportedLngs.length || this.supportedLngs.indexOf(code) > -1
+    );
+  }
+
+  getBestMatchFromCodes(codes) {
+    if (!codes) return null;
+
+    let found;
+
+    // pick first supported code or if no restriction pick the first one (highest prio)
+    codes.forEach(code => {
+      if (found) return;
+      let cleanedLng = this.formatLanguageCode(code);
+      if (!this.options.supportedLngs || this.isSupportedCode(cleanedLng)) found = cleanedLng;
+    });
+
+    // if we got no match in supportedLngs yet - check for similar locales
+    // first  de-CH --> de
+    // second de-CH --> de-DE
+    if (!found && this.options.supportedLngs) {
+      codes.forEach(code => {
+        if (found) return;
+
+        let lngOnly = this.getLanguagePartFromCode(code);
+        if (this.isSupportedCode(lngOnly)) return (found = lngOnly);
+
+        found = this.options.supportedLngs.find(supportedLng => {
+          if (supportedLng.indexOf(lngOnly) === 0) return supportedLng;
+        });
+      });
+    }
+
+    // if nothing found, use fallbackLng
+    if (!found) found = this.getFallbackCodes(this.options.fallbackLng)[0];
+
+    return found;
+  }
+
+  getFallbackCodes(fallbacks, code) {
+    if (!fallbacks) return [];
+    if (typeof fallbacks === 'string') fallbacks = [fallbacks];
+    if (Object.prototype.toString.apply(fallbacks) === '[object Array]') return fallbacks;
+
+    if (!code) return fallbacks.default || [];
+
+    // asume we have an object defining fallbacks
+    let found = fallbacks[code];
+    if (!found) found = fallbacks[this.getScriptPartFromCode(code)];
+    if (!found) found = fallbacks[this.formatLanguageCode(code)];
+    if (!found) found = fallbacks[this.getLanguagePartFromCode(code)];
+    if (!found) found = fallbacks.default;
+
+    return found || [];
+  }
+
+  toResolveHierarchy(code, fallbackCode) {
+    const fallbackCodes = this.getFallbackCodes(
+      fallbackCode || this.options.fallbackLng || [],
+      code,
+    );
+
+    const codes = [];
+    const addCode = c => {
+      if (!c) return;
+      if (this.isSupportedCode(c)) {
+        codes.push(c);
+      } else {
+        this.logger.warn(`rejecting language code not found in supportedLngs: ${c}`);
+      }
+    };
+
+    if (typeof code === 'string' && code.indexOf('-') > -1) {
+      if (this.options.load !== 'languageOnly') addCode(this.formatLanguageCode(code));
+      if (this.options.load !== 'languageOnly' && this.options.load !== 'currentOnly')
+        addCode(this.getScriptPartFromCode(code));
+      if (this.options.load !== 'currentOnly') addCode(this.getLanguagePartFromCode(code));
+    } else if (typeof code === 'string') {
+      addCode(this.formatLanguageCode(code));
+    }
+
+    fallbackCodes.forEach(fc => {
+      if (codes.indexOf(fc) < 0) addCode(this.formatLanguageCode(fc));
+    });
+
+    return codes;
+  }
+}
+
+export default LanguageUtil;

app/Resources/public/assets/i18next/src/PluralResolver.js

@@ -0,0 +1,160 @@
+import baseLogger from './logger.js';
+
+// definition http://translate.sourceforge.net/wiki/l10n/pluralforms
+/* eslint-disable */
+let sets = [
+  { lngs: ['ach','ak','am','arn','br','fil','gun','ln','mfe','mg','mi','oc', 'pt', 'pt-BR',
+    'tg','ti','tr','uz','wa'], nr: [1,2], fc: 1 },
+
+  { lngs: ['af','an','ast','az','bg','bn','ca','da','de','dev','el','en',
+    'eo','es','et','eu','fi','fo','fur','fy','gl','gu','ha','hi',
+    'hu','hy','ia','it','kn','ku','lb','mai','ml','mn','mr','nah','nap','nb',
+    'ne','nl','nn','no','nso','pa','pap','pms','ps','pt-PT','rm','sco',
+    'se','si','so','son','sq','sv','sw','ta','te','tk','ur','yo'], nr: [1,2], fc: 2 },
+
+  { lngs: ['ay','bo','cgg','fa','id','ja','jbo','ka','kk','km','ko','ky','lo',
+    'ms','sah','su','th','tt','ug','vi','wo','zh'], nr: [1], fc: 3 },
+
+  { lngs: ['be','bs', 'cnr', 'dz','hr','ru','sr','uk'], nr: [1,2,5], fc: 4 },
+
+  { lngs: ['ar'], nr: [0,1,2,3,11,100], fc: 5 },
+  { lngs: ['cs','sk'], nr: [1,2,5], fc: 6 },
+  { lngs: ['csb','pl'], nr: [1,2,5], fc: 7 },
+  { lngs: ['cy'], nr: [1,2,3,8], fc: 8 },
+  { lngs: ['fr'], nr: [1,2], fc: 9 },
+  { lngs: ['ga'], nr: [1,2,3,7,11], fc: 10 },
+  { lngs: ['gd'], nr: [1,2,3,20], fc: 11 },
+  { lngs: ['is'], nr: [1,2], fc: 12 },
+  { lngs: ['jv'], nr: [0,1], fc: 13 },
+  { lngs: ['kw'], nr: [1,2,3,4], fc: 14 },
+  { lngs: ['lt'], nr: [1,2,10], fc: 15 },
+  { lngs: ['lv'], nr: [1,2,0], fc: 16 },
+  { lngs: ['mk'], nr: [1,2], fc: 17 },
+  { lngs: ['mnk'], nr: [0,1,2], fc: 18 },
+  { lngs: ['mt'], nr: [1,2,11,20], fc: 19 },
+  { lngs: ['or'], nr: [2,1], fc: 2 },
+  { lngs: ['ro'], nr: [1,2,20], fc: 20 },
+  { lngs: ['sl'], nr: [5,1,2,3], fc: 21 },
+  { lngs: ['he'], nr: [1,2,20,21], fc: 22 }
+]
+
+let _rulesPluralsTypes = {
+  1: function(n) {return Number(n > 1);},
+  2: function(n) {return Number(n != 1);},
+  3: function(n) {return 0;},
+  4: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);},
+  5: function(n) {return Number(n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 ? 4 : 5);},
+  6: function(n) {return Number((n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2);},
+  7: function(n) {return Number(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);},
+  8: function(n) {return Number((n==1) ? 0 : (n==2) ? 1 : (n != 8 && n != 11) ? 2 : 3);},
+  9: function(n) {return Number(n >= 2);},
+  10: function(n) {return Number(n==1 ? 0 : n==2 ? 1 : n<7 ? 2 : n<11 ? 3 : 4) ;},
+  11: function(n) {return Number((n==1 || n==11) ? 0 : (n==2 || n==12) ? 1 : (n > 2 && n < 20) ? 2 : 3);},
+  12: function(n) {return Number(n%10!=1 || n%100==11);},
+  13: function(n) {return Number(n !== 0);},
+  14: function(n) {return Number((n==1) ? 0 : (n==2) ? 1 : (n == 3) ? 2 : 3);},
+  15: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2);},
+  16: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n !== 0 ? 1 : 2);},
+  17: function(n) {return Number(n==1 || n%10==1 ? 0 : 1);},
+  18: function(n) {return Number(n==0 ? 0 : n==1 ? 1 : 2);},
+  19: function(n) {return Number(n==1 ? 0 : n==0 || ( n%100>1 && n%100<11) ? 1 : (n%100>10 && n%100<20 ) ? 2 : 3);},
+  20: function(n) {return Number(n==1 ? 0 : (n==0 || (n%100 > 0 && n%100 < 20)) ? 1 : 2);},
+  21: function(n) {return Number(n%100==1 ? 1 : n%100==2 ? 2 : n%100==3 || n%100==4 ? 3 : 0); },
+  22: function(n) {return Number(n==1 ? 0 : n==2 ? 1 : (n<0 || n>10) && n%10==0 ? 2 : 3); }
+};
+/* eslint-enable */
+
+function createRules() {
+  const rules = {};
+  sets.forEach((set) => {
+    set.lngs.forEach((l) => {
+      rules[l] = {
+        numbers: set.nr,
+        plurals: _rulesPluralsTypes[set.fc]
+      };
+    });
+  });
+  return rules;
+}
+
+class PluralResolver {
+  constructor(languageUtils, options = {}) {
+    this.languageUtils = languageUtils;
+    this.options = options;
+
+    this.logger = baseLogger.create('pluralResolver');
+
+    this.rules = createRules();
+  }
+
+  addRule(lng, obj) {
+    this.rules[lng] = obj;
+  }
+
+  getRule(code) {
+    return this.rules[code] || this.rules[this.languageUtils.getLanguagePartFromCode(code)];
+  }
+
+  needsPlural(code) {
+    const rule = this.getRule(code);
+
+    return rule && rule.numbers.length > 1;
+  }
+
+  getPluralFormsOfKey(code, key) {
+    const ret = [];
+
+    const rule = this.getRule(code);
+
+    if (!rule) return ret;
+
+    rule.numbers.forEach((n) => {
+      const suffix = this.getSuffix(code, n);
+      ret.push(`${key}${suffix}`);
+    });
+
+    return ret;
+  }
+
+  getSuffix(code, count) {
+    const rule = this.getRule(code);
+
+    if (rule) {
+      // if (rule.numbers.length === 1) return ''; // only singular
+
+      const idx = rule.noAbs ? rule.plurals(count) : rule.plurals(Math.abs(count));
+      let suffix = rule.numbers[idx];
+
+      // special treatment for lngs only having singular and plural
+      if (this.options.simplifyPluralSuffix && rule.numbers.length === 2 && rule.numbers[0] === 1) {
+        if (suffix === 2) {
+          suffix = 'plural';
+        } else if (suffix === 1) {
+          suffix = '';
+        }
+      }
+
+      const returnSuffix = () => (
+        this.options.prepend && suffix.toString() ? this.options.prepend + suffix.toString() : suffix.toString()
+      );
+
+      // COMPATIBILITY JSON
+      // v1
+      if (this.options.compatibilityJSON === 'v1') {
+        if (suffix === 1) return '';
+        if (typeof suffix === 'number') return `_plural_${suffix.toString()}`;
+        return returnSuffix();
+      } else if (/* v2 */ this.options.compatibilityJSON === 'v2') {
+        return returnSuffix();
+      } else if (/* v3 - gettext index */ this.options.simplifyPluralSuffix && rule.numbers.length === 2 && rule.numbers[0] === 1) {
+        return returnSuffix();
+      }
+      return this.options.prepend && idx.toString() ? this.options.prepend + idx.toString() : idx.toString();
+    }
+
+    this.logger.warn(`no plural rule found for: ${code}`);
+    return '';
+  }
+}
+
+export default PluralResolver;

app/Resources/public/assets/i18next/src/README.md

@@ -0,0 +1,9 @@
+# i18next: learn once - translate everywhere
+
+## visit ➡️ [i18next.com](https://www.i18next.com)
+
+```js
+import i18next from 'https://deno.land/x/i18next/index.js';
+// or import i18next from 'https://raw.githubusercontent.com/i18next/i18next/master/src/index.js'
+// or import i18next from 'https://cdn.jsdelivr.net/gh/i18next/i18next/src/index.js'
+```

app/Resources/public/assets/i18next/src/ResourceStore.js

@@ -0,0 +1,134 @@
+import EventEmitter from './EventEmitter.js';
+import * as utils from './utils.js';
+
+class ResourceStore extends EventEmitter {
+  constructor(data, options = { ns: ['translation'], defaultNS: 'translation' }) {
+    super();
+    if (utils.isIE10) {
+      EventEmitter.call(this); // <=IE10 fix (unable to call parent constructor)
+    }
+
+    this.data = data || {};
+    this.options = options;
+    if (this.options.keySeparator === undefined) {
+      this.options.keySeparator = '.';
+    }
+  }
+
+  addNamespaces(ns) {
+    if (this.options.ns.indexOf(ns) < 0) {
+      this.options.ns.push(ns);
+    }
+  }
+
+  removeNamespaces(ns) {
+    const index = this.options.ns.indexOf(ns);
+    if (index > -1) {
+      this.options.ns.splice(index, 1);
+    }
+  }
+
+  getResource(lng, ns, key, options = {}) {
+    const keySeparator =
+      options.keySeparator !== undefined ? options.keySeparator : this.options.keySeparator;
+
+    let path = [lng, ns];
+    if (key && typeof key !== 'string') path = path.concat(key);
+    if (key && typeof key === 'string')
+      path = path.concat(keySeparator ? key.split(keySeparator) : key);
+
+    if (lng.indexOf('.') > -1) {
+      path = lng.split('.');
+    }
+
+    return utils.getPath(this.data, path);
+  }
+
+  addResource(lng, ns, key, value, options = { silent: false }) {
+    let keySeparator = this.options.keySeparator;
+    if (keySeparator === undefined) keySeparator = '.';
+
+    let path = [lng, ns];
+    if (key) path = path.concat(keySeparator ? key.split(keySeparator) : key);
+
+    if (lng.indexOf('.') > -1) {
+      path = lng.split('.');
+      value = ns;
+      ns = path[1];
+    }
+
+    this.addNamespaces(ns);
+
+    utils.setPath(this.data, path, value);
+
+    if (!options.silent) this.emit('added', lng, ns, key, value);
+  }
+
+  addResources(lng, ns, resources, options = { silent: false }) {
+    /* eslint no-restricted-syntax: 0 */
+    for (const m in resources) {
+      if (
+        typeof resources[m] === 'string' ||
+        Object.prototype.toString.apply(resources[m]) === '[object Array]'
+      )
+        this.addResource(lng, ns, m, resources[m], { silent: true });
+    }
+    if (!options.silent) this.emit('added', lng, ns, resources);
+  }
+
+  addResourceBundle(lng, ns, resources, deep, overwrite, options = { silent: false }) {
+    let path = [lng, ns];
+    if (lng.indexOf('.') > -1) {
+      path = lng.split('.');
+      deep = resources;
+      resources = ns;
+      ns = path[1];
+    }
+
+    this.addNamespaces(ns);
+
+    let pack = utils.getPath(this.data, path) || {};
+
+    if (deep) {
+      utils.deepExtend(pack, resources, overwrite);
+    } else {
+      pack = { ...pack, ...resources };
+    }
+
+    utils.setPath(this.data, path, pack);
+
+    if (!options.silent) this.emit('added', lng, ns, resources);
+  }
+
+  removeResourceBundle(lng, ns) {
+    if (this.hasResourceBundle(lng, ns)) {
+      delete this.data[lng][ns];
+    }
+    this.removeNamespaces(ns);
+
+    this.emit('removed', lng, ns);
+  }
+
+  hasResourceBundle(lng, ns) {
+    return this.getResource(lng, ns) !== undefined;
+  }
+
+  getResourceBundle(lng, ns) {
+    if (!ns) ns = this.options.defaultNS;
+
+    // COMPATIBILITY: remove extend in v2.1.0
+    if (this.options.compatibilityAPI === 'v1') return { ...{}, ...this.getResource(lng, ns) };
+
+    return this.getResource(lng, ns);
+  }
+
+  getDataByLanguage(lng) {
+    return this.data[lng];
+  }
+
+  toJSON() {
+    return this.data;
+  }
+}
+
+export default ResourceStore;

app/Resources/public/assets/i18next/src/Translator.js

@@ -0,0 +1,425 @@
+import baseLogger from './logger.js';
+import EventEmitter from './EventEmitter.js';
+import postProcessor from './postProcessor.js';
+import * as utils from './utils.js';
+
+const checkedLoadedFor = {};
+
+class Translator extends EventEmitter {
+  constructor(services, options = {}) {
+    super();
+    if (utils.isIE10) {
+      EventEmitter.call(this); // <=IE10 fix (unable to call parent constructor)
+    }
+
+    utils.copy(
+      [
+        'resourceStore',
+        'languageUtils',
+        'pluralResolver',
+        'interpolator',
+        'backendConnector',
+        'i18nFormat',
+        'utils',
+      ],
+      services,
+      this,
+    );
+
+    this.options = options;
+    if (this.options.keySeparator === undefined) {
+      this.options.keySeparator = '.';
+    }
+
+    this.logger = baseLogger.create('translator');
+  }
+
+  changeLanguage(lng) {
+    if (lng) this.language = lng;
+  }
+
+  exists(key, options = { interpolation: {} }) {
+    const resolved = this.resolve(key, options);
+    return resolved && resolved.res !== undefined;
+  }
+
+  extractFromKey(key, options) {
+    let nsSeparator = options.nsSeparator || this.options.nsSeparator;
+    if (nsSeparator === undefined) nsSeparator = ':';
+
+    const keySeparator =
+      options.keySeparator !== undefined ? options.keySeparator : this.options.keySeparator;
+
+    let namespaces = options.ns || this.options.defaultNS;
+    if (nsSeparator && key.indexOf(nsSeparator) > -1) {
+      const parts = key.split(nsSeparator);
+      if (
+        nsSeparator !== keySeparator ||
+        (nsSeparator === keySeparator && this.options.ns.indexOf(parts[0]) > -1)
+      )
+        namespaces = parts.shift();
+      key = parts.join(keySeparator);
+    }
+    if (typeof namespaces === 'string') namespaces = [namespaces];
+
+    return {
+      key,
+      namespaces,
+    };
+  }
+
+  translate(keys, options) {
+    if (typeof options !== 'object' && this.options.overloadTranslationOptionHandler) {
+      /* eslint prefer-rest-params: 0 */
+      options = this.options.overloadTranslationOptionHandler(arguments);
+    }
+    if (!options) options = {};
+
+    // non valid keys handling
+    if (keys === undefined || keys === null /* || keys === ''*/) return '';
+    if (!Array.isArray(keys)) keys = [String(keys)];
+
+    // separators
+    const keySeparator =
+      options.keySeparator !== undefined ? options.keySeparator : this.options.keySeparator;
+
+    // get namespace(s)
+    const { key, namespaces } = this.extractFromKey(keys[keys.length - 1], options);
+    const namespace = namespaces[namespaces.length - 1];
+
+    // return key on CIMode
+    const lng = options.lng || this.language;
+    const appendNamespaceToCIMode =
+      options.appendNamespaceToCIMode || this.options.appendNamespaceToCIMode;
+    if (lng && lng.toLowerCase() === 'cimode') {
+      if (appendNamespaceToCIMode) {
+        const nsSeparator = options.nsSeparator || this.options.nsSeparator;
+        return namespace + nsSeparator + key;
+      }
+
+      return key;
+    }
+
+    // resolve from store
+    const resolved = this.resolve(keys, options);
+    let res = resolved && resolved.res;
+    const resUsedKey = (resolved && resolved.usedKey) || key;
+    const resExactUsedKey = (resolved && resolved.exactUsedKey) || key;
+
+    const resType = Object.prototype.toString.apply(res);
+    const noObject = ['[object Number]', '[object Function]', '[object RegExp]'];
+    const joinArrays =
+      options.joinArrays !== undefined ? options.joinArrays : this.options.joinArrays;
+
+    // object
+    const handleAsObjectInI18nFormat = !this.i18nFormat || this.i18nFormat.handleAsObject;
+    const handleAsObject =
+      typeof res !== 'string' && typeof res !== 'boolean' && typeof res !== 'number';
+    if (
+      handleAsObjectInI18nFormat &&
+      res &&
+      handleAsObject &&
+      noObject.indexOf(resType) < 0 &&
+      !(typeof joinArrays === 'string' && resType === '[object Array]')
+    ) {
+      if (!options.returnObjects && !this.options.returnObjects) {
+        this.logger.warn('accessing an object - but returnObjects options is not enabled!');
+        return this.options.returnedObjectHandler
+          ? this.options.returnedObjectHandler(resUsedKey, res, options)
+          : `key '${key} (${this.language})' returned an object instead of string.`;
+      }
+
+      // if we got a separator we loop over children - else we just return object as is
+      // as having it set to false means no hierarchy so no lookup for nested values
+      if (keySeparator) {
+        const resTypeIsArray = resType === '[object Array]';
+        const copy = resTypeIsArray ? [] : {}; // apply child translation on a copy
+
+        /* eslint no-restricted-syntax: 0 */
+        let newKeyToUse = resTypeIsArray ? resExactUsedKey : resUsedKey;
+        for (const m in res) {
+          if (Object.prototype.hasOwnProperty.call(res, m)) {
+            const deepKey = `${newKeyToUse}${keySeparator}${m}`;
+            copy[m] = this.translate(deepKey, {
+              ...options,
+              ...{ joinArrays: false, ns: namespaces },
+            });
+            if (copy[m] === deepKey) copy[m] = res[m]; // if nothing found use orginal value as fallback
+          }
+        }
+        res = copy;
+      }
+    } else if (
+      handleAsObjectInI18nFormat &&
+      typeof joinArrays === 'string' &&
+      resType === '[object Array]'
+    ) {
+      // array special treatment
+      res = res.join(joinArrays);
+      if (res) res = this.extendTranslation(res, keys, options);
+    } else {
+      // string, empty or null
+      let usedDefault = false;
+      let usedKey = false;
+
+      // fallback value
+      if (!this.isValidLookup(res) && options.defaultValue !== undefined) {
+        usedDefault = true;
+
+        if (options.count !== undefined) {
+          const suffix = this.pluralResolver.getSuffix(lng, options.count);
+          res = options[`defaultValue${suffix}`];
+        }
+        if (!res) res = options.defaultValue;
+      }
+      if (!this.isValidLookup(res)) {
+        usedKey = true;
+        res = key;
+      }
+
+      // save missing
+      const updateMissing =
+        options.defaultValue && options.defaultValue !== res && this.options.updateMissing;
+      if (usedKey || usedDefault || updateMissing) {
+        this.logger.log(
+          updateMissing ? 'updateKey' : 'missingKey',
+          lng,
+          namespace,
+          key,
+          updateMissing ? options.defaultValue : res,
+        );
+        if (keySeparator) {
+          const fk = this.resolve(key, { ...options, keySeparator: false });
+          if (fk && fk.res) this.logger.warn('Seems the loaded translations were in flat JSON format instead of nested. Either set keySeparator: false on init or make sure your translations are published in nested format.');
+        }
+
+        let lngs = [];
+        const fallbackLngs = this.languageUtils.getFallbackCodes(
+          this.options.fallbackLng,
+          options.lng || this.language,
+        );
+        if (this.options.saveMissingTo === 'fallback' && fallbackLngs && fallbackLngs[0]) {
+          for (let i = 0; i < fallbackLngs.length; i++) {
+            lngs.push(fallbackLngs[i]);
+          }
+        } else if (this.options.saveMissingTo === 'all') {
+          lngs = this.languageUtils.toResolveHierarchy(options.lng || this.language);
+        } else {
+          lngs.push(options.lng || this.language);
+        }
+
+        const send = (l, k) => {
+          if (this.options.missingKeyHandler) {
+            this.options.missingKeyHandler(
+              l,
+              namespace,
+              k,
+              updateMissing ? options.defaultValue : res,
+              updateMissing,
+              options,
+            );
+          } else if (this.backendConnector && this.backendConnector.saveMissing) {
+            this.backendConnector.saveMissing(
+              l,
+              namespace,
+              k,
+              updateMissing ? options.defaultValue : res,
+              updateMissing,
+              options,
+            );
+          }
+          this.emit('missingKey', l, namespace, k, res);
+        };
+
+        if (this.options.saveMissing) {
+          const needsPluralHandling =
+            options.count !== undefined && typeof options.count !== 'string';
+          if (this.options.saveMissingPlurals && needsPluralHandling) {
+            lngs.forEach(l => {
+              const plurals = this.pluralResolver.getPluralFormsOfKey(l, key);
+
+              plurals.forEach(p => send([l], p));
+            });
+          } else {
+            send(lngs, key);
+          }
+        }
+      }
+
+      // extend
+      res = this.extendTranslation(res, keys, options, resolved);
+
+      // append namespace if still key
+      if (usedKey && res === key && this.options.appendNamespaceToMissingKey)
+        res = `${namespace}:${key}`;
+
+      // parseMissingKeyHandler
+      if (usedKey && this.options.parseMissingKeyHandler)
+        res = this.options.parseMissingKeyHandler(res);
+    }
+
+    // return
+    return res;
+  }
+
+  extendTranslation(res, key, options, resolved) {
+    if (this.i18nFormat && this.i18nFormat.parse) {
+      res = this.i18nFormat.parse(
+        res,
+        options,
+        resolved.usedLng,
+        resolved.usedNS,
+        resolved.usedKey,
+        { resolved },
+      );
+    } else if (!options.skipInterpolation) {
+      // i18next.parsing
+      if (options.interpolation)
+        this.interpolator.init({
+          ...options,
+          ...{ interpolation: { ...this.options.interpolation, ...options.interpolation } },
+        });
+
+      // interpolate
+      let data = options.replace && typeof options.replace !== 'string' ? options.replace : options;
+      if (this.options.interpolation.defaultVariables)
+        data = { ...this.options.interpolation.defaultVariables, ...data };
+      res = this.interpolator.interpolate(res, data, options.lng || this.language, options);
+
+      // nesting
+      if (options.nest !== false)
+        res = this.interpolator.nest(res, (...args) => this.translate(...args), options);
+
+      if (options.interpolation) this.interpolator.reset();
+    }
+
+    // post process
+    const postProcess = options.postProcess || this.options.postProcess;
+    const postProcessorNames = typeof postProcess === 'string' ? [postProcess] : postProcess;
+
+    if (
+      res !== undefined &&
+      res !== null &&
+      postProcessorNames &&
+      postProcessorNames.length &&
+      options.applyPostProcessor !== false
+    ) {
+      res = postProcessor.handle(
+        postProcessorNames,
+        res,
+        key,
+        this.options && this.options.postProcessPassResolved
+          ? { i18nResolved: resolved, ...options }
+          : options,
+        this,
+      );
+    }
+
+    return res;
+  }
+
+  resolve(keys, options = {}) {
+    let found;
+    let usedKey; // plain key
+    let exactUsedKey; // key with context / plural
+    let usedLng;
+    let usedNS;
+
+    if (typeof keys === 'string') keys = [keys];
+
+    // forEach possible key
+    keys.forEach(k => {
+      if (this.isValidLookup(found)) return;
+      const extracted = this.extractFromKey(k, options);
+      const key = extracted.key;
+      usedKey = key;
+      let namespaces = extracted.namespaces;
+      if (this.options.fallbackNS) namespaces = namespaces.concat(this.options.fallbackNS);
+
+      const needsPluralHandling = options.count !== undefined && typeof options.count !== 'string';
+      const needsContextHandling =
+        options.context !== undefined &&
+        typeof options.context === 'string' &&
+        options.context !== '';
+
+      const codes = options.lngs
+        ? options.lngs
+        : this.languageUtils.toResolveHierarchy(options.lng || this.language, options.fallbackLng);
+
+      namespaces.forEach(ns => {
+        if (this.isValidLookup(found)) return;
+        usedNS = ns;
+
+        if (
+          !checkedLoadedFor[`${codes[0]}-${ns}`] &&
+          this.utils &&
+          this.utils.hasLoadedNamespace &&
+          !this.utils.hasLoadedNamespace(usedNS)
+        ) {
+          checkedLoadedFor[`${codes[0]}-${ns}`] = true;
+          this.logger.warn(
+            `key "${usedKey}" for languages "${codes.join(
+              ', ',
+            )}" won't get resolved as namespace "${usedNS}" was not yet loaded`,
+            'This means something IS WRONG in your setup. You access the t function before i18next.init / i18next.loadNamespace / i18next.changeLanguage was done. Wait for the callback or Promise to resolve before accessing it!!!',
+          );
+        }
+
+        codes.forEach(code => {
+          if (this.isValidLookup(found)) return;
+          usedLng = code;
+
+          let finalKey = key;
+          const finalKeys = [finalKey];
+
+          if (this.i18nFormat && this.i18nFormat.addLookupKeys) {
+            this.i18nFormat.addLookupKeys(finalKeys, key, code, ns, options);
+          } else {
+            let pluralSuffix;
+            if (needsPluralHandling)
+              pluralSuffix = this.pluralResolver.getSuffix(code, options.count);
+
+            // fallback for plural if context not found
+            if (needsPluralHandling && needsContextHandling)
+              finalKeys.push(finalKey + pluralSuffix);
+
+            // get key for context if needed
+            if (needsContextHandling)
+              finalKeys.push((finalKey += `${this.options.contextSeparator}${options.context}`));
+
+            // get key for plural if needed
+            if (needsPluralHandling) finalKeys.push((finalKey += pluralSuffix));
+          }
+
+          // iterate over finalKeys starting with most specific pluralkey (-> contextkey only) -> singularkey only
+          let possibleKey;
+          /* eslint no-cond-assign: 0 */
+          while ((possibleKey = finalKeys.pop())) {
+            if (!this.isValidLookup(found)) {
+              exactUsedKey = possibleKey;
+              found = this.getResource(code, ns, possibleKey, options);
+            }
+          }
+        });
+      });
+    });
+
+    return { res: found, usedKey, exactUsedKey, usedLng, usedNS };
+  }
+
+  isValidLookup(res) {
+    return (
+      res !== undefined &&
+      !(!this.options.returnNull && res === null) &&
+      !(!this.options.returnEmptyString && res === '')
+    );
+  }
+
+  getResource(code, ns, key, options = {}) {
+    if (this.i18nFormat && this.i18nFormat.getResource)
+      return this.i18nFormat.getResource(code, ns, key, options);
+    return this.resourceStore.getResource(code, ns, key, options);
+  }
+}
+
+export default Translator;

app/Resources/public/assets/i18next/src/defaults.js

@@ -0,0 +1,107 @@
+export function get() {
+  return {
+    debug: false,
+    initImmediate: true,
+
+    ns: ['translation'],
+    defaultNS: ['translation'],
+    fallbackLng: ['dev'],
+    fallbackNS: false, // string or array of namespaces
+
+    // temporal backwards compatibility WHITELIST REMOVAL
+    whitelist: false, // array with supported languages
+    nonExplicitWhitelist: false,
+    // end temporal backwards compatibility WHITELIST REMOVAL
+
+    supportedLngs: false, // array with supported languages
+    nonExplicitSupportedLngs: false,
+    load: 'all', // | currentOnly | languageOnly
+    preload: false, // array with preload languages
+
+    simplifyPluralSuffix: true,
+    keySeparator: '.',
+    nsSeparator: ':',
+    pluralSeparator: '_',
+    contextSeparator: '_',
+
+    partialBundledLanguages: false, // allow bundling certain languages that are not remotely fetched
+    saveMissing: false, // enable to send missing values
+    updateMissing: false, // enable to update default values if different from translated value (only useful on initial development, or when keeping code as source of truth)
+    saveMissingTo: 'fallback', // 'current' || 'all'
+    saveMissingPlurals: true, // will save all forms not only singular key
+    missingKeyHandler: false, // function(lng, ns, key, fallbackValue) -> override if prefer on handling
+    missingInterpolationHandler: false, // function(str, match)
+
+    postProcess: false, // string or array of postProcessor names
+    postProcessPassResolved: false, // pass resolved object into 'options.i18nResolved' for postprocessor
+    returnNull: true, // allows null value as valid translation
+    returnEmptyString: true, // allows empty string value as valid translation
+    returnObjects: false,
+    joinArrays: false, // or string to join array
+    returnedObjectHandler: false, // function(key, value, options) triggered if key returns object but returnObjects is set to false
+    parseMissingKeyHandler: false, // function(key) parsed a key that was not found in t() before returning
+    appendNamespaceToMissingKey: false,
+    appendNamespaceToCIMode: false,
+    overloadTranslationOptionHandler: function handle(args) {
+      var ret = {};
+      if (typeof args[1] === 'object') ret = args[1];
+      if (typeof args[1] === 'string') ret.defaultValue = args[1];
+      if (typeof args[2] === 'string') ret.tDescription = args[2];
+      if (typeof args[2] === 'object' || typeof args[3] === 'object') {
+        var options = args[3] || args[2];
+        Object.keys(options).forEach(function(key) {
+          ret[key] = options[key];
+        });
+      }
+      return ret;
+    },
+    interpolation: {
+      escapeValue: true,
+      format: (value, format, lng, options) => value,
+      prefix: '{{',
+      suffix: '}}',
+      formatSeparator: ',',
+      // prefixEscaped: '{{',
+      // suffixEscaped: '}}',
+      // unescapeSuffix: '',
+      unescapePrefix: '-',
+
+      nestingPrefix: '$t(',
+      nestingSuffix: ')',
+      nestingOptionsSeparator: ',',
+      // nestingPrefixEscaped: '$t(',
+      // nestingSuffixEscaped: ')',
+      // defaultVariables: undefined // object that can have values to interpolate on - extends passed in interpolation data
+      maxReplaces: 1000, // max replaces to prevent endless loop
+    },
+  };
+}
+
+/* eslint no-param-reassign: 0 */
+export function transformOptions(options) {
+  // create namespace object if namespace is passed in as string
+  if (typeof options.ns === 'string') options.ns = [options.ns];
+  if (typeof options.fallbackLng === 'string') options.fallbackLng = [options.fallbackLng];
+  if (typeof options.fallbackNS === 'string') options.fallbackNS = [options.fallbackNS];
+
+  // temporal backwards compatibility WHITELIST REMOVAL
+  if (options.whitelist) {
+    if (options.whitelist && options.whitelist.indexOf('cimode') < 0) {
+      options.whitelist = options.whitelist.concat(['cimode']);
+    }
+
+    options.supportedLngs = options.whitelist;
+  }
+
+  if (options.nonExplicitWhitelist) {
+    options.nonExplicitSupportedLngs = options.nonExplicitWhitelist;
+  }
+  // end temporal backwards compatibility WHITELIST REMOVAL
+
+  // extend supportedLngs with cimode
+  if (options.supportedLngs && options.supportedLngs.indexOf('cimode') < 0) {
+    options.supportedLngs = options.supportedLngs.concat(['cimode']);
+  }
+
+  return options;
+}

app/Resources/public/assets/i18next/src/i18next.js

@@ -0,0 +1,516 @@
+import baseLogger from './logger.js';
+import EventEmitter from './EventEmitter.js';
+import ResourceStore from './ResourceStore.js';
+import Translator from './Translator.js';
+import LanguageUtils from './LanguageUtils.js';
+import PluralResolver from './PluralResolver.js';
+import Interpolator from './Interpolator.js';
+import BackendConnector from './BackendConnector.js';
+import { get as getDefaults, transformOptions } from './defaults.js';
+import postProcessor from './postProcessor.js';
+import { defer, isIE10 } from './utils.js';
+
+function noop() { }
+
+class I18n extends EventEmitter {
+  constructor(options = {}, callback) {
+    super();
+    if (isIE10) {
+      EventEmitter.call(this) // <=IE10 fix (unable to call parent constructor)
+    }
+
+    this.options = transformOptions(options);
+    this.services = {};
+    this.logger = baseLogger;
+    this.modules = { external: [] };
+
+    if (callback && !this.isInitialized && !options.isClone) {
+      // https://github.com/i18next/i18next/issues/879
+      if (!this.options.initImmediate) {
+        this.init(options, callback);
+        return this;
+      }
+      setTimeout(() => {
+        this.init(options, callback);
+      }, 0);
+    }
+  }
+
+  init(options = {}, callback) {
+    if (typeof options === 'function') {
+      callback = options;
+      options = {};
+    }
+
+    // temporal backwards compatibility WHITELIST REMOVAL
+    if (options.whitelist && !options.supportedLngs) {
+      this.logger.deprecate('whitelist', 'option "whitelist" will be renamed to "supportedLngs" in the next major - please make sure to rename this option asap.');
+    }
+    if (options.nonExplicitWhitelist && !options.nonExplicitSupportedLngs) {
+      this.logger.deprecate('whitelist', 'options "nonExplicitWhitelist" will be renamed to "nonExplicitSupportedLngs" in the next major - please make sure to rename this option asap.');
+    }
+    // end temporal backwards compatibility WHITELIST REMOVAL
+
+
+    this.options = { ...getDefaults(), ...this.options, ...transformOptions(options) };
+
+    this.format = this.options.interpolation.format;
+    if (!callback) callback = noop;
+
+    function createClassOnDemand(ClassOrObject) {
+      if (!ClassOrObject) return null;
+      if (typeof ClassOrObject === 'function') return new ClassOrObject();
+      return ClassOrObject;
+    }
+
+    // init services
+    if (!this.options.isClone) {
+      if (this.modules.logger) {
+        baseLogger.init(createClassOnDemand(this.modules.logger), this.options);
+      } else {
+        baseLogger.init(null, this.options);
+      }
+
+      const lu = new LanguageUtils(this.options);
+      this.store = new ResourceStore(this.options.resources, this.options);
+
+      const s = this.services;
+      s.logger = baseLogger;
+      s.resourceStore = this.store;
+      s.languageUtils = lu;
+      s.pluralResolver = new PluralResolver(lu, {
+        prepend: this.options.pluralSeparator,
+        compatibilityJSON: this.options.compatibilityJSON,
+        simplifyPluralSuffix: this.options.simplifyPluralSuffix,
+      });
+      s.interpolator = new Interpolator(this.options);
+      s.utils = {
+        hasLoadedNamespace: this.hasLoadedNamespace.bind(this)
+      }
+
+      s.backendConnector = new BackendConnector(
+        createClassOnDemand(this.modules.backend),
+        s.resourceStore,
+        s,
+        this.options,
+      );
+      // pipe events from backendConnector
+      s.backendConnector.on('*', (event, ...args) => {
+        this.emit(event, ...args);
+      });
+
+      if (this.modules.languageDetector) {
+        s.languageDetector = createClassOnDemand(this.modules.languageDetector);
+        s.languageDetector.init(s, this.options.detection, this.options);
+      }
+
+      if (this.modules.i18nFormat) {
+        s.i18nFormat = createClassOnDemand(this.modules.i18nFormat);
+        if (s.i18nFormat.init) s.i18nFormat.init(this);
+      }
+
+      this.translator = new Translator(this.services, this.options);
+      // pipe events from translator
+      this.translator.on('*', (event, ...args) => {
+        this.emit(event, ...args);
+      });
+
+      this.modules.external.forEach(m => {
+        if (m.init) m.init(this);
+      });
+    }
+
+    if (!this.modules.languageDetector && !this.options.lng) {
+      this.logger.warn('init: no languageDetector is used and no lng is defined');
+    }
+
+    // append api
+    const storeApi = [
+      'getResource',
+      'addResource',
+      'addResources',
+      'addResourceBundle',
+      'removeResourceBundle',
+      'hasResourceBundle',
+      'getResourceBundle',
+      'getDataByLanguage',
+    ];
+    storeApi.forEach(fcName => {
+      this[fcName] = (...args) => this.store[fcName](...args);
+    });
+
+    const deferred = defer();
+
+    const load = () => {
+      this.changeLanguage(this.options.lng, (err, t) => {
+        this.isInitialized = true;
+        this.logger.log('initialized', this.options);
+        this.emit('initialized', this.options);
+
+        deferred.resolve(t); // not rejecting on err (as err is only a loading translation failed warning)
+        callback(err, t);
+      });
+    };
+
+    if (this.options.resources || !this.options.initImmediate) {
+      load();
+    } else {
+      setTimeout(load, 0);
+    }
+
+    return deferred;
+  }
+
+  /* eslint consistent-return: 0 */
+  loadResources(language, callback = noop) {
+    let usedCallback = callback;
+    let usedLng = typeof language === 'string' ? language : this.language;
+    if (typeof language === 'function') usedCallback = language;
+
+    if (!this.options.resources || this.options.partialBundledLanguages) {
+      if (usedLng && usedLng.toLowerCase() === 'cimode') return usedCallback(); // avoid loading resources for cimode
+
+      const toLoad = [];
+
+      const append = lng => {
+        if (!lng) return;
+        const lngs = this.services.languageUtils.toResolveHierarchy(lng);
+        lngs.forEach(l => {
+          if (toLoad.indexOf(l) < 0) toLoad.push(l);
+        });
+      };
+
+      if (!usedLng) {
+        // at least load fallbacks in this case
+        const fallbacks = this.services.languageUtils.getFallbackCodes(this.options.fallbackLng);
+        fallbacks.forEach(l => append(l));
+      } else {
+        append(usedLng);
+      }
+
+      if (this.options.preload) {
+        this.options.preload.forEach(l => append(l));
+      }
+
+      this.services.backendConnector.load(toLoad, this.options.ns, usedCallback);
+    } else {
+      usedCallback(null);
+    }
+  }
+
+  reloadResources(lngs, ns, callback) {
+    const deferred = defer();
+    if (!lngs) lngs = this.languages;
+    if (!ns) ns = this.options.ns;
+    if (!callback) callback = noop;
+    this.services.backendConnector.reload(lngs, ns, err => {
+      deferred.resolve(); // not rejecting on err (as err is only a loading translation failed warning)
+      callback(err);
+    });
+    return deferred;
+  }
+
+  use(module) {
+    if (!module) throw new Error('You are passing an undefined module! Please check the object you are passing to i18next.use()')
+    if (!module.type) throw new Error('You are passing a wrong module! Please check the object you are passing to i18next.use()')
+
+    if (module.type === 'backend') {
+      this.modules.backend = module;
+    }
+
+    if (module.type === 'logger' || (module.log && module.warn && module.error)) {
+      this.modules.logger = module;
+    }
+
+    if (module.type === 'languageDetector') {
+      this.modules.languageDetector = module;
+    }
+
+    if (module.type === 'i18nFormat') {
+      this.modules.i18nFormat = module;
+    }
+
+    if (module.type === 'postProcessor') {
+      postProcessor.addPostProcessor(module);
+    }
+
+    if (module.type === '3rdParty') {
+      this.modules.external.push(module);
+    }
+
+    return this;
+  }
+
+  changeLanguage(lng, callback) {
+    this.isLanguageChangingTo = lng;
+    const deferred = defer();
+    this.emit('languageChanging', lng);
+
+    const done = (err, l) => {
+      if (l) {
+        this.language = l;
+        this.languages = this.services.languageUtils.toResolveHierarchy(l);
+        this.translator.changeLanguage(l);
+        this.isLanguageChangingTo = undefined;
+        this.emit('languageChanged', l);
+        this.logger.log('languageChanged', l);
+      } else {
+        this.isLanguageChangingTo = undefined;
+      }
+
+      deferred.resolve((...args) => this.t(...args));
+      if (callback) callback(err, (...args) => this.t(...args));
+    };
+
+    const setLng = lngs => {
+      // depending on API in detector lng can be a string (old) or an array of languages ordered in priority
+      const l = typeof lngs === 'string' ? lngs : this.services.languageUtils.getBestMatchFromCodes(lngs);
+
+      if (l) {
+        if (!this.language) {
+          this.language = l;
+          this.languages = this.services.languageUtils.toResolveHierarchy(l);
+        }
+        if (!this.translator.language) this.translator.changeLanguage(l);
+
+        if (this.services.languageDetector) this.services.languageDetector.cacheUserLanguage(l);
+      }
+
+      this.loadResources(l, err => {
+        done(err, l);
+      });
+    };
+
+    if (!lng && this.services.languageDetector && !this.services.languageDetector.async) {
+      setLng(this.services.languageDetector.detect());
+    } else if (!lng && this.services.languageDetector && this.services.languageDetector.async) {
+      this.services.languageDetector.detect(setLng);
+    } else {
+      setLng(lng);
+    }
+
+    return deferred;
+  }
+
+  getFixedT(lng, ns) {
+    const fixedT = (key, opts, ...rest) => {
+      let options;
+      if (typeof opts !== 'object') {
+        options = this.options.overloadTranslationOptionHandler([key, opts].concat(rest));
+      } else {
+        options = { ...opts };
+      }
+
+      options.lng = options.lng || fixedT.lng;
+      options.lngs = options.lngs || fixedT.lngs;
+      options.ns = options.ns || fixedT.ns;
+      return this.t(key, options);
+    };
+    if (typeof lng === 'string') {
+      fixedT.lng = lng;
+    } else {
+      fixedT.lngs = lng;
+    }
+    fixedT.ns = ns;
+    return fixedT;
+  }
+
+  t(...args) {
+    return this.translator && this.translator.translate(...args);
+  }
+
+  exists(...args) {
+    return this.translator && this.translator.exists(...args);
+  }
+
+  setDefaultNamespace(ns) {
+    this.options.defaultNS = ns;
+  }
+
+  hasLoadedNamespace(ns, options = {}) {
+    if (!this.isInitialized) {
+      this.logger.warn('hasLoadedNamespace: i18next was not initialized', this.languages);
+      return false;
+    }
+    if (!this.languages || !this.languages.length) {
+      this.logger.warn('hasLoadedNamespace: i18n.languages were undefined or empty', this.languages);
+      return false;
+    }
+
+    const lng = this.languages[0];
+    const fallbackLng = this.options ? this.options.fallbackLng : false;
+    const lastLng = this.languages[this.languages.length - 1];
+
+    // we're in cimode so this shall pass
+    if (lng.toLowerCase() === 'cimode') return true;
+
+    const loadNotPending = (l, n) => {
+      const loadState = this.services.backendConnector.state[`${l}|${n}`];
+      return loadState === -1 || loadState === 2;
+    };
+
+    // optional injected check
+    if (options.precheck) {
+      const preResult = options.precheck(this, loadNotPending);
+      if (preResult !== undefined) return preResult;
+    }
+
+    // loaded -> SUCCESS
+    if (this.hasResourceBundle(lng, ns)) return true;
+
+    // were not loading at all -> SEMI SUCCESS
+    if (!this.services.backendConnector.backend) return true;
+
+    // failed loading ns - but at least fallback is not pending -> SEMI SUCCESS
+    if (loadNotPending(lng, ns) && (!fallbackLng || loadNotPending(lastLng, ns))) return true;
+
+    return false;
+  }
+
+  loadNamespaces(ns, callback) {
+    const deferred = defer();
+
+    if (!this.options.ns) {
+      callback && callback();
+      return Promise.resolve();
+    }
+    if (typeof ns === 'string') ns = [ns];
+
+    ns.forEach(n => {
+      if (this.options.ns.indexOf(n) < 0) this.options.ns.push(n);
+    });
+
+    this.loadResources(err => {
+      deferred.resolve();
+      if (callback) callback(err);
+    });
+
+    return deferred;
+  }
+
+  loadLanguages(lngs, callback) {
+    const deferred = defer();
+
+    if (typeof lngs === 'string') lngs = [lngs];
+    const preloaded = this.options.preload || [];
+
+    const newLngs = lngs.filter(lng => preloaded.indexOf(lng) < 0);
+    // Exit early if all given languages are already preloaded
+    if (!newLngs.length) {
+      if (callback) callback();
+      return Promise.resolve();
+    }
+
+    this.options.preload = preloaded.concat(newLngs);
+    this.loadResources(err => {
+      deferred.resolve();
+      if (callback) callback(err);
+    });
+
+    return deferred;
+  }
+
+  dir(lng) {
+    if (!lng) lng = this.languages && this.languages.length > 0 ? this.languages[0] : this.language;
+    if (!lng) return 'rtl';
+
+    const rtlLngs = [
+      'ar',
+      'shu',
+      'sqr',
+      'ssh',
+      'xaa',
+      'yhd',
+      'yud',
+      'aao',
+      'abh',
+      'abv',
+      'acm',
+      'acq',
+      'acw',
+      'acx',
+      'acy',
+      'adf',
+      'ads',
+      'aeb',
+      'aec',
+      'afb',
+      'ajp',
+      'apc',
+      'apd',
+      'arb',
+      'arq',
+      'ars',
+      'ary',
+      'arz',
+      'auz',
+      'avl',
+      'ayh',
+      'ayl',
+      'ayn',
+      'ayp',
+      'bbz',
+      'pga',
+      'he',
+      'iw',
+      'ps',
+      'pbt',
+      'pbu',
+      'pst',
+      'prp',
+      'prd',
+      'ug',
+      'ur',
+      'ydd',
+      'yds',
+      'yih',
+      'ji',
+      'yi',
+      'hbo',
+      'men',
+      'xmn',
+      'fa',
+      'jpr',
+      'peo',
+      'pes',
+      'prs',
+      'dv',
+      'sam',
+    ];
+
+    return rtlLngs.indexOf(this.services.languageUtils.getLanguagePartFromCode(lng)) >= 0
+      ? 'rtl'
+      : 'ltr';
+  }
+
+  /* eslint class-methods-use-this: 0 */
+  createInstance(options = {}, callback) {
+    return new I18n(options, callback);
+  }
+
+  cloneInstance(options = {}, callback = noop) {
+    const mergedOptions = { ...this.options, ...options, ...{ isClone: true } };
+    const clone = new I18n(mergedOptions);
+    const membersToCopy = ['store', 'services', 'language'];
+    membersToCopy.forEach(m => {
+      clone[m] = this[m];
+    });
+    clone.services = { ...this.services };
+    clone.services.utils = {
+      hasLoadedNamespace: clone.hasLoadedNamespace.bind(clone)
+    };
+    clone.translator = new Translator(clone.services, clone.options);
+    clone.translator.on('*', (event, ...args) => {
+      clone.emit(event, ...args);
+    });
+    clone.init(mergedOptions, callback);
+    clone.translator.options = clone.options; // sync options
+    clone.translator.backendConnector.services.utils = {
+      hasLoadedNamespace: clone.hasLoadedNamespace.bind(clone)
+    };
+
+    return clone;
+  }
+}
+
+export default new I18n();

app/Resources/public/assets/i18next/src/index.js

@@ -0,0 +1,3 @@
+import i18next from './i18next.js';
+
+export default i18next;

app/Resources/public/assets/i18next/src/logger.js

@@ -0,0 +1,68 @@
+const consoleLogger = {
+  type: 'logger',
+
+  log(args) {
+    this.output('log', args);
+  },
+
+  warn(args) {
+    this.output('warn', args);
+  },
+
+  error(args) {
+    this.output('error', args);
+  },
+
+  output(type, args) {
+    /* eslint no-console: 0 */
+    if (console && console[type]) console[type].apply(console, args);
+  },
+};
+
+class Logger {
+  constructor(concreteLogger, options = {}) {
+    this.init(concreteLogger, options);
+  }
+
+  init(concreteLogger, options = {}) {
+    this.prefix = options.prefix || 'i18next:';
+    this.logger = concreteLogger || consoleLogger;
+    this.options = options;
+    this.debug = options.debug;
+  }
+
+  setDebug(bool) {
+    this.debug = bool;
+  }
+
+  log(...args) {
+    return this.forward(args, 'log', '', true);
+  }
+
+  warn(...args) {
+    return this.forward(args, 'warn', '', true);
+  }
+
+  error(...args) {
+    return this.forward(args, 'error', '');
+  }
+
+  deprecate(...args) {
+    return this.forward(args, 'warn', 'WARNING DEPRECATED: ', true);
+  }
+
+  forward(args, lvl, prefix, debugOnly) {
+    if (debugOnly && !this.debug) return null;
+    if (typeof args[0] === 'string') args[0] = `${prefix}${this.prefix} ${args[0]}`;
+    return this.logger[lvl](args);
+  }
+
+  create(moduleName) {
+    return new Logger(this.logger, {
+      ...{ prefix: `${this.prefix}:${moduleName}:` },
+      ...this.options,
+    });
+  }
+}
+
+export default new Logger();

app/Resources/public/assets/i18next/src/postProcessor.js

@@ -0,0 +1,16 @@
+export default {
+  processors: {},
+
+  addPostProcessor(module) {
+    this.processors[module.name] = module;
+  },
+
+  handle(processors, value, key, options, translator) {
+    processors.forEach(processor => {
+      if (this.processors[processor])
+        value = this.processors[processor].process(value, key, options, translator);
+    });
+
+    return value;
+  },
+};

app/Resources/public/assets/i18next/src/utils.js

@@ -0,0 +1,134 @@
+// http://lea.verou.me/2016/12/resolve-promises-externally-with-this-one-weird-trick/
+export function defer() {
+  let res;
+  let rej;
+
+  const promise = new Promise((resolve, reject) => {
+    res = resolve;
+    rej = reject;
+  });
+
+  promise.resolve = res;
+  promise.reject = rej;
+
+  return promise;
+}
+
+export function makeString(object) {
+  if (object == null) return '';
+  /* eslint prefer-template: 0 */
+  return '' + object;
+}
+
+export function copy(a, s, t) {
+  a.forEach(m => {
+    if (s[m]) t[m] = s[m];
+  });
+}
+
+function getLastOfPath(object, path, Empty) {
+  function cleanKey(key) {
+    return key && key.indexOf('###') > -1 ? key.replace(/###/g, '.') : key;
+  }
+
+  function canNotTraverseDeeper() {
+    return !object || typeof object === 'string';
+  }
+
+  const stack = typeof path !== 'string' ? [].concat(path) : path.split('.');
+  while (stack.length > 1) {
+    if (canNotTraverseDeeper()) return {};
+
+    const key = cleanKey(stack.shift());
+    if (!object[key] && Empty) object[key] = new Empty();
+    object = object[key];
+  }
+
+  if (canNotTraverseDeeper()) return {};
+  return {
+    obj: object,
+    k: cleanKey(stack.shift()),
+  };
+}
+
+export function setPath(object, path, newValue) {
+  const { obj, k } = getLastOfPath(object, path, Object);
+
+  obj[k] = newValue;
+}
+
+export function pushPath(object, path, newValue, concat) {
+  const { obj, k } = getLastOfPath(object, path, Object);
+
+  obj[k] = obj[k] || [];
+  if (concat) obj[k] = obj[k].concat(newValue);
+  if (!concat) obj[k].push(newValue);
+}
+
+export function getPath(object, path) {
+  const { obj, k } = getLastOfPath(object, path);
+
+  if (!obj) return undefined;
+  return obj[k];
+}
+
+export function getPathWithDefaults(data, defaultData, key) {
+  const value = getPath(data, key);
+  if (value !== undefined) {
+    return value;
+  }
+  // Fallback to default values
+  return getPath(defaultData, key);
+}
+
+export function deepExtend(target, source, overwrite) {
+  /* eslint no-restricted-syntax: 0 */
+  for (const prop in source) {
+    if (prop in target) {
+      // If we reached a leaf string in target or source then replace with source or skip depending on the 'overwrite' switch
+      if (
+        typeof target[prop] === 'string' ||
+        target[prop] instanceof String ||
+        typeof source[prop] === 'string' ||
+        source[prop] instanceof String
+      ) {
+        if (overwrite) target[prop] = source[prop];
+      } else {
+        deepExtend(target[prop], source[prop], overwrite);
+      }
+    } else {
+      target[prop] = source[prop];
+    }
+  }
+  return target;
+}
+
+export function regexEscape(str) {
+  /* eslint no-useless-escape: 0 */
+  return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
+}
+
+/* eslint-disable */
+var _entityMap = {
+  '&': '&',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&quot;',
+  "'": '&#39;',
+  '/': '&#x2F;',
+};
+/* eslint-enable */
+
+export function escape(data) {
+  if (typeof data === 'string') {
+    return data.replace(/[&<>"'\/]/g, s => _entityMap[s]);
+  }
+
+  return data;
+}
+
+export const isIE10 =
+  typeof window !== 'undefined' &&
+  window.navigator &&
+  window.navigator.userAgent &&
+  window.navigator.userAgent.indexOf('MSIE') > -1;

app/Resources/public/assets/i18next/tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es5",
+    "lib": ["es6", "dom"],
+    "jsx": "react",
+    "moduleResolution": "node",
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noEmit": true,
+    "baseUrl": ".",
+    "paths": { "i18next": ["./index.d.ts"] },
+
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["./index.d.ts", "./test/**/*.ts*"],
+  "exclude": ["test/typescript/nonEsModuleInterop/**/*.ts"]
+}

app/Resources/public/assets/i18next/tsconfig.nonEsModuleInterop.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    // typescript defaults to these
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": false
+  }
+}

app/Resources/public/assets/i18next/tslint.json

@@ -0,0 +1,7 @@
+{
+  "defaultSeverity": "error",
+  "extends": "dtslint/dtslint.json",
+  "rules": {
+    "semicolon": false
+  }
+}