Examine source code of Code Interview

{
  "name": "__MSG_appName__",
  "version": "0.0.1",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "icons/icon.png",
    "128": "icons/icon.png"
  },
  "default_locale": "en",
  "optional_permissions": [
    "*://*/"
  ],
  "permissions": [
    "*://*.remoteinterview.io/*",
    "*://*.codeinterview.io/*"
  ],
  "browser_action": {
    "default_icons": {
      "19": "icons/icon.png",
      "38": "icons/icon.png"
    },
    "default_title": "Code Interview",
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "images/*",
    "icons/*"
  ],
  "applications": {
    "gecko": {
      "id": "support@remoteinterview.io"
    }
  }
}