Examine source code of Topcoder Gigs Listing

{
  "manifest_version": 2,
  "name": "topcodergigs-extension",
  "version": "1.3",
  "description": "Topcoder gigs listing extension for firefox",
  "homepage_url": "https://gitlab.com/nerding_it/topcoder-gigs-firefox-extension",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "Topcoder Gigs",
    "default_popup": "templates/index.html"
  }
}