feat: show documents link only when applicable

templates/booking/index.html.twig

@@ -4,6 +4,7 @@
     <h2 class="text-2xl font-semibold pb-4">
         Meine Buchungen
     </h2>
+    {% include '_partials/_flashes.html.twig' %}
     <table class="w-full mb-4 responsive">
         <thead>
         <tr class="bg-zinc-200">
@@ -70,13 +71,17 @@
                             </a>
                         {% endif %}
                         <a href="{{ path('app_booking_confirmation', { 'id': booking.id }) }}"
-                           class="button bg-button button--small">
+                           class="button bg-button button--small"
+                           target="_blank">
                             Bestätigung
                         </a>
-                        <a href="{{ path('app_booking_documents', { 'id': booking.id }) }}"
-                           class="button bg-button button--small">
-                            Reisedokumente
-                        </a>
+                        {% if booking.hasDocuments %}
+                            <a href="{{ path('app_booking_documents', { 'id': booking.id }) }}"
+                               class="button bg-button button--small"
+                               target="_blank">
+                                Reisedokumente
+                            </a>
+                        {% endif %}
                     </div>
                 </td>
             </tr>