Examine source code of Notizen

{
  "manifest_version": 2,
  "name": "make a note",
  "description": "Displays a popup that lets you write notes on web pages.",
  "version": "1.2resigned1",
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "d.hoolly@neusta-grafenstein.de",
      "strict_min_version": "42.0"
    }
  },
  "browser_action": {
    "browser_style": true,
    "default_popup": "popup/notizen.html",
    "default_icon": {
      "16": "icons/page-16.png",
      "32": "icons/page-32.png"
    },
    "default_title": "Notizen"
  }
}