Examine source code of Off the hook

{
  "description": "Phishing Detection Addon",
  "manifest_version": 2,
  "name": "Off the hook",
  "version": "1.2resigned1",
  "permissions": [
    "tabs",
    "notifications",
    "contextMenus",
    "activeTab",
    "webNavigation",
    "webRequest"
  ],
  "applications": {
    "gecko": {
      "id": "manish.thapa@aalto.fi",
      "strict_min_version": "45.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "resources/js/jquery-1.8.0.js",
        "resources/js/async.js",
        "extension.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "resources/css/style.css",
    "resources/images/alert.png",
    "resources/images/red.png",
    "resources/images/green.png",
    "resources/images/loading-tick.png",
    "resources/images/loading3.gif",
    "resources/images/hook5.gif",
    "resources/images/hook5.png",
    "resources/images/hook5green.png",
    "resources/images/hook5red.png",
    "resources/images/loading5.gif",
    "resources/images/aalto-yellow.png",
    "resources/images/aalto-red.png",
    "resources/images/aalto-blue.png",
    "resources/images/white-tick.gif"
  ],
  "browser_action": {
    "default_icon": "resources/images/hook5.png"
  }
}