first test for custom fields filter

client/components/sidebar/sidebarFilters.jade

@@ -40,6 +40,12 @@ template(name="filterSidebar")
               | (<span class="username">{{ username }}</span>)
             if Filter.members.isSelected _id
               i.fa.fa-check
+  ul.sidebar-list
+    each currentBoard.customFields
+      li
+        a.name.js-toggle-label-filter
+          span.sidebar-list-item-description
+            {{ name }}
   if Filter.isActive
     hr
     a.sidebar-btn.js-clear-all