Examine source code of Maldito Bulo

{
  "manifest_version": 2,
  "name": "Maldito Bulo",
  "description": "Que no te la cuelen: con Maldito Bulo obtendrás alertas cuando visites una web con informaciones falsas.",
  "version": "1.0.10resigned1",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "96": "icons/icon_96.png",
    "128": "icons/icon_128.png"
  },
  "background": {
    "scripts": [
      "js/background.js",
      "js/installed.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "Maldito Bulo",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/jquery-3.1.1.min.js",
        "js/dompurify.js",
        "js/websites.js"
      ],
      "css": [
        "styles/style.css",
        "styles/mb-notifications.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "public/*"
  ],
  "permissions": [
    "<all_urls>",
    "activeTab",
    "webNavigation",
    "storage",
    "notifications",
    "tabs",
    "alarms",
    "unlimitedStorage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4382243e-504a-4314-b694-65a60f510e52}"
    }
  }
}