Generate Breadcrumb for only for modules where module_apps are clearly defined

app/views/layouts/back_end.html.erb

@@ -24,7 +24,10 @@
     <div class="wrap-inner">
       <div id="filter" class="topnav clearfix">
         <ul class="breadcrumb text-info pull-left">
+        <% if @module_app.present?%>
           <%= back_end_breadcrumb %>
+        <%else%>
+        <%end%>
         </ul>
         <%= yield :right_nav %>
       </div>