Examine source code of CMS Editor Redirect

{
  "manifest_version": 2,
  "name": "CMS Editor Redirect",
  "version": "0.1",
  "description": "Redirects to cascade cms live editor using meta ID tags",
  "options_page": "options.html",
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_title": "CMS Editor Redirect",
    "default_icon": "icons/icon.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.js",
        "cms-redirect.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@cmseditorredirect"
    }
  }
}