Examine source code of AudioCloud audio editor

{
  "manifest_version": 3,
  "name": "__MSG_title__",
  "version": "1.2.4",
  "description": "__MSG_description__",
  "default_locale": "en",
  "options_page": "settings.html",
  "action": {
    "default_popup": "boot.html",
    "default_icon": "icns/i_38.png"
  },
  "icons": {
    "16": "icns/i_16.png",
    "48": "icns/i_48.png",
    "128": "icns/i_128.png"
  },
  "background": {
    "scripts": [
      "officloud.js"
    ]
  },
  "permissions": [
    "storage",
    "webNavigation"
  ],
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{12a1a919-43af-432c-90a1-a34116ab1a2a}"
    }
  }
}