Examine source code of MOCO Zeiterfassung

{
  "name": "MOCO Zeiterfassung",
  "short_name": "MOCO",
  "description": "Browser plugin for MOCO",
  "manifest_version": 2,
  "icons": {
    "16": "src/images/moco-32x32.png",
    "32": "src/images/moco-32x32.png",
    "48": "src/images/moco-159x159.png",
    "128": "src/images/moco-159x159.png"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "https://*.mocoapp.com/*",
    "storage",
    "tabs",
    "webRequest"
  ],
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "default_icon": "src/images/moco-32x32.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.2.18.1.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "commands": {
    "_execute_browser_action": {
      "description": "MOCO-Zeiterfassung ein- und ausblenden",
      "suggested_key": {
        "default": "Ctrl+Shift+K",
        "mac": "Command+Shift+K"
      }
    }
  },
  "web_accessible_resources": [
    "src/images/*",
    "popup.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "browser-extension@mocoapp.com"
    }
  },
  "version": "2.18.1"
}