Examine source code of Help play Travian

{
  "manifest_version": 2,
  "name": "Help play Travian",
  "description": "Auto travian ,building,auto building crop",
  "version": "10.39",
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_popup": "popup/popup.html",
    "default_title": "Auto Travian"
  },
  "permissions": [
    "activeTab",
    "notifications",
    "https://gagiongsamoanh.xyz/travianauto.php",
    "storage",
    "https://ajax.googleapis.com/"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.travian.com/*",
        "*://*.travian.com.vn/*",
        "*://*.travian.it/*",
        "*://*.travian.ro/*"
      ],
      "js": [
        "popup/jquery.js",
        "popup/popup1.js",
        "borderify.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browsrt_specfic_settings": {
    "gecko": {
      "id": "a5debeda436d4b81aa7659b3cb4088af1cbae8b2@temporary-addon",
      "strict_min_version": "45.0"
    }
  },
  "background": {
    "scripts": [
      "popup/jquery.js",
      "popup/backgroud.js"
    ],
    "persistent": false
  }
}