Examine source code of Welight

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "{ef21a8fa-8063-4c5d-ba57-3ef7b16e65f2}",
      "strict_min_version": "42.0"
    }
  },
  "name": "Welight",
  "version": "2.1.4resigned1",
  "short_name": "Welight",
  "author": "Marcos William Ferretti",
  "browser_action": {
    "default_title": "Welight",
    "default_icon": "images/logo64.png"
  },
  "description": "Verifica se o site de compra é parceiro Welight.",
  "icons": {
    "16": "images/logo16.png",
    "48": "images/logo48.png",
    "64": "images/logo64.png",
    "128": "images/logo128.png"
  },
  "background": {
    "scripts": [
      "config/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "bower_components/jquery/dist/jquery.min.js",
        "config/content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "bower_components/bootstrap/dist/css/bootstrap.min.css",
    "bower_components/bootstrap/dist/css/bootstrap-theme.min.css",
    "bower_components/jquery/dist/jquery.min.js",
    "bower_components/bootstrap/dist/js/bootstrap.min.js",
    "bower_components/twbs-pagination/jquery.twbsPagination.min.js",
    "images/loading_welight.gif",
    "images/logo90.png",
    "app/app.css",
    "app/app.js",
    "app/app.html"
  ],
  "permissions": [
    "tabs",
    "https://api.welight.co/*",
    "https://www.welight.co/*",
    "storage",
    "management",
    "cookies",
    "<all_urls>"
  ]
}