UPD: dav_events: enable save as draft

dav_events/templates/dav_events/event_create/SummaryForm.html

@@ -40,11 +40,9 @@
     {% bootstrap_icon 'remove' %} 
     {% trans 'Abbrechen' %}
 </a>
-<!--
 <button id="btn-form-save" type="submit" name="save" class="btn btn-info">
     {% bootstrap_icon 'hdd' %}&thinsp;
     {% trans 'Als Entwurf speichern' %}
 </button>
--->
 {% endbuttons %}
 {% endblock form-buttons %}