Examine source code of Translator (2)

{
  "manifest_version": 2,
  "name": "Translator",
  "description": "__MSG_description__",
  "author": "SailorMax",
  "icons": {
    "16": "icons/icon-16.png",
    "18": "icons/icon-18.png",
    "19": "icons/icon-19.png",
    "20": "icons/icon-20.png",
    "36": "icons/icon-18@2x.png",
    "38": "icons/icon-19@2x.png",
    "40": "icons/icon-20@2x.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-48@2x.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png"
  },
  "version": "1.6.17",
  "applications": {
    "gecko": {
      "id": "translator2@sailormax.net"
    }
  },
  "default_locale": "en",
  "background": {
    "page": "index.html",
    "persistent": true
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "js": [
        "includes/user_js.js"
      ],
      "matches": [
        "*://*/*"
      ],
      "all_frames": true
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "tts",
    "*://*/",
    "clipboardRead",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "18": "icons/icon-18.png",
      "19": "icons/icon-19.png",
      "20": "icons/icon-20.png",
      "36": "icons/icon-18@2x.png",
      "38": "icons/icon-19@2x.png",
      "40": "icons/icon-20@2x.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png",
      "96": "icons/icon-48@2x.png",
      "128": "icons/icon-64@2x.png"
    },
    "default_title": "Translator",
    "default_popup": "popup.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L"
      },
      "description": "__MSG_description_hotkey__"
    }
  },
  "sidebar_action": {
    "default_icon": "icons/icon-18.png",
    "default_title": "Translator",
    "default_panel": "sidebar.html"
  },
  "options_page": "settings.html",
  "options_ui": {
    "browser_style": false,
    "open_in_tab": true,
    "page": "settings.html"
  }
}