Examine source code of Task Management System

{
  "name": "Task Management System",
  "author": "Terry Yuen",
  "version": "0.3.1",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "icon_16.png",
    "24": "icon_24.png",
    "38": "icon_38.png",
    "48": "icon_48.png",
    "96": "icon_96.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "*://graph.microsoft.com/*",
    "*://login.microsoftonline.com/*",
    "storage",
    "unlimitedStorage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://login.microsoftonline.com/common/oauth2/nativeclient*"
      ],
      "js": [
        "/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icon_16.png",
      "24": "icon_24.png",
      "38": "icon_38.png",
      "48": "icon_48.png",
      "96": "icon_96.png"
    }
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      }
    }
  },
  "web_accessible_resources": [
    "app.html"
  ]
}