Examine source code of DS Kekse

{
  "manifest_version": 2,
  "author": "Raytier",
  "name": "__MSG_ext_name__",
  "short_name": "__MSG_ext_short_name__",
  "description": "__MSG_ext_description__",
  "version": "1.1.1resigned1",
  "default_locale": "en",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "cookies",
    "tabs",
    "clipboardRead",
    "clipboardWrite",
    "storage",
    "https://*.die-staemme.de/*",
    "http://*.die-staemme.de/*"
  ],
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.die-staemme.de/page/logout-successful",
        "https://www.die-staemme.de/?session_expired=1"
      ],
      "js": [
        "kill_cookie.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "applications": {
    "gecko": {
      "id": "@dskekse",
      "strict_min_version": "42.0"
    }
  }
}