Examine source code of Millennium JIRA QuickOpen

{
  "manifest_version": 2,
  "name": "Millennium JIRA QuickOpen",
  "version": "1.0",
  "description": "Opens the JIRA ticket for the provided ID",
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "Millennium JIRA QuickOpen",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "popup/options.html"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "applications": {
    "gecko": {
      "id": "sulochana.456@live.com"
    }
  }
}