display learning objects actions for logged users only

app/views/learning_objects/_learning_object_horizontal.erb

@@ -6,7 +6,9 @@
           <img src="http://dummyimage.com/250x150/363336/fff" alt='dummy image'>
         </a>
 
-        <%= render 'learning_objects/actions_buttons' %>
+        <% if user_signed_in? %>
+            <%= render 'learning_objects/actions_buttons' %>
+        <% end %>
       </div>
     </div>
     <div class="media-body">

app/views/learning_objects/_learning_object_vertical.erb

@@ -2,13 +2,15 @@
   <div class="panel">
     <div class="learning-object-thumbnail">
       <a href=""><img src="http://dummyimage.com/250x150/363336/fff" alt='dummy image' class="img-responsive"></a>
-      <%= render 'actions_buttons' %>
+      <% if user_signed_in? %>
+          <%= render 'learning_objects/actions_buttons' %>
+      <% end %>
     </div>
     <div class="panel-body">
       <% if learning_object.name.nil? %>
-        <h4 class="media-heading">Sem Título</h4>
+          <h4 class="media-heading">Sem Título</h4>
       <% else %>
-        <h4 class="media-heading"><%= learning_object.name %></h4>
+          <h4 class="media-heading"><%= learning_object.name %></h4>
       <% end %>
       <span class="glyphicon glyphicon-eye-open"><%= learning_object.views %>&nbsp;</span>
       <span class="glyphicon glyphicon-star"><%= learning_object.likes %>&nbsp;</span>