add hidden switch to termine

layouts/partials/data/termin-upcoming.html

@@ -1 +1 @@
-{{ return or (ge (.date | time.AsTime) now) (and .enddate (ge (.enddate | time.AsTime) now)) }}
+{{ return and (not .hidden) (or (ge (.date | time.AsTime) now) (and .enddate (ge (.enddate | time.AsTime) now))) }}

layouts/termine/list.html

@@ -9,10 +9,12 @@
     </ul>
     <div class="filter-container row mx-auto">
       {{ range sort .Params.events ".date" }}
+      {{ if not .hidden }}
       <div class="filter-item col-12" data-groups='{{if partial "data/termin-upcoming" .}}upcoming{{else}}past{{end}}'>
         {{ partial "termin" . }}
       </div>
       {{ end }}
+      {{ end }}
       <div class="filter-sizer col-1"></div>
     </div>
   </div>