Examine source code of BB Auction Assistant

{
  "manifest_version": 2,
  "name": "BB add-in",
  "version": "1.0",
  "description": "Buzzerbeater add-in",
  "icons": {
    "48": "icons/kelaitis-48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_title": "Groceries list bellow",
    "default_icon": "icons/kelaitis-48.png",
    "default_panel": "panel.html"
  },
  "permissions": [
    "notifications",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/kelaitis-48.png"
    },
    "default_title": "BBappas"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.buzzerbeater.com/*"
      ],
      "js": [
        "uzbidinimas.js"
      ]
    }
  ],
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      }
    }
  }
}