Examine source code of openHAB Controller

{
  "manifest_version": 2,
  "name": "openHAB Controller",
  "short_name": "openHAB Controller",
  "description": "Control your home from anywhere using your openHAB sitemap and Firefox!",
  "version": "0.2.2resigned1",
  "applications": {
    "gecko": {
      "id": "{0151cf35-6e3e-40a9-9d36-6225b649954f}"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "js/context-menu.js"
    ]
  },
  "options_ui": {
    "page": "html/options.html",
    "browser_style": true
  },
  "browser_action": {
    "default_popup": "html/popup.html",
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus"
  ]
}