Examine source code of Quora Nightly

{
  "manifest_version": 2,
  "name": "Quora nightly",
  "version": "1.2resigned1",
  "description": "Quora nightly style",
  "background": {
    "scripts": [
      "nightly.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/icon.png",
    "browser_style": true
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "*://*.quora.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b70f55e4-ca7e-4139-a0e1-97593d707a6a}"
    }
  }
}