Examine source code of Progress UniversityPortal

{
  "manifest_version": 2,
  "name": "Progress Algeria - University Portal",
  "version": "1.0.0",
  "description": "Access your university information from Progress Algeria system on PC",
  "author": "Abd El Basset Lamraoui",
  "homepage_url": "https://github.com/bassetlamraoui",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "https://progres.mesrs.dz/*"
  ],
  "browser_action": {
    "default_title": "Progress Algeria",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "sidebar_action": {
    "default_title": "Progress Algeria",
    "default_panel": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "commands": {
    "open-in-tab": {
      "suggested_key": {
        "default": "Ctrl+Shift+P"
      },
      "description": "Open Progress Algeria in a new tab"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b2591de-000e-4ffe-bcfa-8039c291bf94}"
    }
  }
}