Examine source code of RWTHonlinePlus

{
  "manifest_version": 2,
  "name": "RWTHonlinePlus",
  "version": "0.7.2resigned1",
  "description": "RWTHonline with a Plus (NOT AN OFFICIAL EXTENSION)",
  "homepage_url": "http://plus.rwthonline.de",
  "icons": {
    "16": "icon/16.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "activeTab",
    "*://online.rwth-aachen.de/*",
    "storage"
  ],
  "options_ui": {
    "page": "settings/options.html"
  },
  "browser_action": {
    "default_icon": "icon/16.png",
    "default_popup": "settings/options.html#popup"
  },
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "web_accessible_resources": [
    "dist/injected_script.js",
    "inject/styles.css"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://online.rwth-aachen.de/*"
      ],
      "js": [
        "dist/content_script.js"
      ]
    }
  ],
  "applications": {
    "gecko": {
      "id": "{7bfcb085-5b65-46d8-819d-bbdedaf15020}"
    }
  }
}