Examine source code of Search Links Grid Sortable

{
  "manifest_version": 2,
  "name": "Search Links Grid Sortable",
  "description": "Extension to organize links with an optional search query replace displayed in sortable grid groups",
  "version": "1.0.2",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "contextMenus",
    "tabs",
    "storage"
  ],
  "commands": {
    "openMainDialog": {
      "suggested_key": {
        "default": "Alt+C"
      },
      "description": "Open the main dialog"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@search-links-without-data-collection",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/main.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "content-scripts/main.css"
  ],
  "browser_action": {}
}