several fixes and optimizations

layouts/wettbewerbe/list.html

@@ -1,6 +1,5 @@
 {{ define "main" }}
 
-<!-- wettbewerbe -->
 <section class="section">
   <div class="container">
     <div class="row">
@@ -8,7 +7,6 @@
     </div>
     <div class="row">
       <div class="col-12">
-        <!-- course category list -->
         <ul class="list-inline text-center filter-controls mb-5">
           <li class="list-inline-item m-3 text-uppercase active" data-filter="all">{{ i18n "all" }}</li>
           {{ $categories := slice }}
@@ -21,18 +19,14 @@
         </ul>
       </div>
     </div>
-    <!-- wettbewerbe list -->
     <div class="row filtr-container">
-      <!-- wettbewerb item -->
       {{ range .Data.Pages }}
       <div data-category="{{ .Params.Category | urlize }}" class="col-lg-4 col-sm-6 mb-5 filtr-item">
         {{ .Render "wettbewerbe" }}
       </div>
       {{ end }}
     </div>
-    <!-- /wettbewerbe list -->
   </div>
 </section>
-<!-- /wettbewerbe -->
 
 {{ end }}