Fix rebase with master.

app/views/topics/new.html.erb

@@ -1,6 +1,6 @@
 <div class="topic-new row">
   <div class="small-12 medium-9 column">
-    <%= render "shared/back_link" %>
+    <%= back_link_to community_path(@community) %>
     <h1><%= t("community.topic.create") %></h1>
     <%= render 'form' %>
   </div>