Add favicon

resources/views/layouts/app.twig

@@ -9,6 +9,7 @@
         <meta name="csrf-token" content="{{ csrf_token() }}">
 
         <link rel="stylesheet" type="text/css" href="{{ asset('assets/theme' ~ themeId ~ '.css') }}"/>
+        <link rel="icon" type="image/svg+xml" href="{{ asset('assets/angel.svg') }}" sizes="any">
         <script type="text/javascript" src="{{ asset('assets/vendor.js') }}"></script>
 
         {% if page() in ['news', 'meetings'] and is_user() and has_permission_to('atom') -%}