Examine source code of Narkuss

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "narkuss@johnrazeur",
      "strict_min_version": "42.0",
      "strict_max_version": "52.*"
    }
  },
  "name": "Narkuss",
  "description": "Extension de Narkuss",
  "version": "1.2.2resigned1",
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon_48.png",
    "default_popup": "popup.html",
    "default_title": "Narkuss"
  },
  "background": {
    "scripts": [
      "jquery-3.0.0.min.js",
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "https://ajax.googleapis.com/",
    "alarms",
    "notifications",
    "storage"
  ]
}