Examine source code of preKey- 2.0

{
  "name": "preKey",
  "version": "2.6.4",
  "manifest_version": 2,
  "description": "PreKey, der clevere Passwortmanager. Passwörter verwalten war noch nie so einfach! Passwörter merken war gestern!",
  "permissions": [
    "storage",
    "privacy",
    "tabs",
    "activeTab",
    "webRequest",
    "http://*/*",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "jquery.min.js",
        "jquery-ui.min.js",
        "aes.js",
        "ajax.js",
        "js.js"
      ],
      "run_at": "document_end",
      "css": [
        "main.css"
      ]
    }
  ],
  "icons": {
    "48": "icons/bildmarke.jpg"
  },
  "browser_action": {
    "default_icon": "icons/bildmarke.png",
    "default_popup": "my-page.html"
  },
  "background": {
    "scripts": [
      "jquery.min.js",
      "ajax.js",
      "aes.js",
      "background.js",
      "purify.js"
    ]
  }
}