Examine source code of VIEW: language learning on any webpage

{
  "description": "VIEW is an intelligent computer-assisted language learning (ICALL) system designed to provide language learning activity resources.",
  "homepage_url": "http://sifnos.sfs.uni-tuebingen.de/VIEW",
  "manifest_version": 2,
  "name": "VIEW",
  "version": "1.0.3148resigned1",
  "icons": {
    "48": "icons/view-48.png",
    "64": "icons/view-64.png",
    "96": "icons/view-96.png",
    "128": "icons/view-128.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/view-16.png",
      "19": "icons/view-19.png",
      "32": "icons/view-32.png",
      "38": "icons/view-38.png",
      "64": "icons/view-64.png"
    }
  },
  "background": {
    "scripts": [
      "lib/jquery-3.1.1.min.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "lib/jquery-ui.min.css",
        "content_scripts/interaction.css",
        "content_scripts/view-menu.css",
        "content_scripts/about.css",
        "content_scripts/notification.css",
        "content_scripts/sidebar.css",
        "content_scripts/tooltip.css"
      ],
      "js": [
        "lib/jquery-3.1.1.min.js",
        "lib/jquery-ui.min.js",
        "content_scripts/view.js",
        "content_scripts/container.js",
        "content_scripts/interaction.js",
        "content_scripts/view-menu.js",
        "content_scripts/about.js",
        "content_scripts/blur.js",
        "content_scripts/notification.js",
        "content_scripts/lib.js",
        "content_scripts/sidebar.js",
        "content_scripts/topics/ru/rusnouns.js",
        "content_scripts/topics/ru/rusadjectives.js",
        "content_scripts/topics/ru/rusverbs.js",
        "content_scripts/topics/ru/rusverbaspect.js",
        "content_scripts/topics/ru/rusparticiples.js",
        "content_scripts/topics/ru/ruswordstress.js",
        "content_scripts/topics/ru/rusassistivereading.js",
        "content_scripts/topics/es/serestar.js",
        "content_scripts/topics/en/pos.js",
        "content_scripts/topics/en/gerunds.js",
        "content_scripts/topics/en/nouncountability.js",
        "content_scripts/topics/en/phrasalverbs.js",
        "content_scripts/topics/en/whquestions.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options/options.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "cookies",
    "*://sifnos.sfs.uni-tuebingen.de/*",
    "*://localhost/*"
  ],
  "web_accessible_resources": [
    "toolbar/toolbar.html",
    "content_scripts/about.html",
    "content_scripts/interaction.html",
    "content_scripts/view-menu.html",
    "icons/view-128.png",
    "icons/loading.gif"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{23b26f13-c7e0-4ec8-82a6-ceb2c7018bd8}"
    }
  }
}