Examine source code of Mefox

{
  "background": {
    "scripts": [
      "md5.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "manifest_version": 2,
  "default_locale": "en",
  "name": "Mefox",
  "web_accessible_resources": [
    "login.html",
    "block.html",
    "blockedext.html"
  ],
  "icons": {
    "16": "img/dlwatch16.png",
    "32": "img/dlwatch32.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "storage",
    "webNavigation",
    "webRequest",
    "webRequestBlocking"
  ],
  "version": "2.6.1resigned1",
  "applications": {
    "gecko": {
      "id": "MEfox@zhichaoxi.uu.me",
      "strict_min_version": "57.0"
    }
  }
}