Examine source code of Language Annotator

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "1.4.1",
  "description": "__MSG_appDescription__",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "https://translate.googleapis.com/*",
    "https://kateglo.lostfocus.org/*",
    "https://freedictionaryapi.com/*",
    "https://jotoba.de/*"
  ],
  "background": {
    "scripts": [
      "storage.js",
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "storage.js",
        "ui-i18n.js",
        "ui-tour.js",
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "language-annotator@phoenix000.local",
      "strict_min_version": "140.0",
      "strict_min_version_android": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}