Examine source code of Intranet Tweaks

{
  "browser_specific_settings": {
    "gecko": {
      "id": "intranettweaks@tomrobinson.com",
      "strict_min_version": "42.0"
    }
  },
  "manifest_version": 2,
  "name": "Intranet Tweaks",
  "description": "Fixes small details in the CGS intranet",
  "version": "1.7a",
  "browser_action": {
    "default_popup": "popup/featureSelect.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://intranet.cgs.vic.edu.au/Portal/",
        "https://intranet.cgs.vic.edu.au/CurriculumPortal/"
      ],
      "exclude_matches": [
        "https://intranet.cgs.vic.edu.au/CurriculumPortal/\\?*"
      ],
      "js": [
        "contentScript.js"
      ],
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "activeTab",
    "tabs",
    "https://portal.cgs.vic.edu.au/*",
    "storage",
    "unlimitedStorage"
  ]
}