Examine source code of Tripoli

{
  "manifest_version": 2,
  "name": "Tripoli",
  "description": "A new grade calculator and tool for Heritage students",
  "version": "1.3resigned1",
  "content_scripts": [
    {
      "js": [
        "sum.js"
      ],
      "matches": [
        "https://ahschoolpl.seniormbp.com/*",
        "http://ahschoolpl.seniormbp.com/*",
        "https://ahschoolbd.seniormbp.com/*",
        "https://ahschoolbd.seniormbp.com/*"
      ]
    }
  ],
  "icons": {
    "16": "icon/icon16.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "web_accessible_resources": [
    "gpa.png"
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>",
    "background",
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "tripoli@phoenicia.io"
    }
  }
}