hide collections navbar for features that are not implemented yet

app/views/collections/show.html.erb

@@ -28,7 +28,7 @@
     </div>
   </div>
   <br/></nav>
-<nav class="navigation navbar-inverse ">
+<!--<nav class="navigation navbar-inverse ">
   <div class="container-fluid">
     <a class="navbar-brand" href="#"><span style="color: white">x arquivo(s) selecionado(s)</span></a>
     <ul class="nav navbar-nav navbar-right">
@@ -52,7 +52,7 @@
       <% end %>
     </ul>
   </div>
-</nav>
+</nav>-->
 
 <div class="row learning-object-columns">
   <br/>