Examine source code of Gjerrigknark annoyance

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "1.2",
  "manifest_version": 2,
  "default_locale": "en",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "https://gjerrigknark.com/*"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icons": {
      "16": "images/logo16.png",
      "32": "images/logo32.png",
      "48": "images/logo48.png",
      "128": "images/logo128.png"
    }
  },
  "icons": {
    "16": "images/logo16.png",
    "32": "images/logo32.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gjerrigknark@kodesnutt.no"
    }
  }
}