Examine source code of affilinet Extension

{
  "name": "__MSG_appName__",
  "version": "3.3.6.1resigned1",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "icons/icon-16.png",
    "128": "icons/icon-128.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "clipboardWrite",
    "http://*/*",
    "https://*/*"
  ],
  "options_ui": {
    "page": "settings-page/index.html#!/settings"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/icon-19.png",
      "38": "icons/icon-38.png",
      "64": "icons/icon-64.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "affilinet",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "styles/contentscript.css"
      ],
      "js": [
        "scripts/contentscript.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    "icons/*",
    "styles/*.css",
    "images/*"
  ],
  "applications": {
    "gecko": {
      "id": "affilinet-toolbar@affili.net"
    }
  }
}