allow trip to be deleted if noone has registered yet

templates/index.html.tera

@@ -179,6 +179,7 @@
             </div>
             {% endif %}
           </div>
+	  <div><a href="/cox/remove/trip/{{ trip.id }}">LÖSCHEN</a></div>
         </div>
         <div class="sidebar-overlay" data-trigger="detailTrip{{ trip.trip_details_id }}"></div>
         {% endfor %}
@@ -259,4 +260,4 @@
   {% endfor %}
 </div>
 </div>
-{% endblock content %}
+{% endblock content %}