Use display names for module edit links in the cms

cms/templates/widgets/navigation.html

@@ -60,7 +60,7 @@
             data-type="${module.js_module_name}"
             data-preview-type="${module.module_class.js_module_name}">
 
-            <a href="#" class="module-edit">${module.url_name}</a>
+            <a href="#" class="module-edit">${module.display_name}</a>
             <a href="#" class="draggable">handle</a>
         </li>
         % endfor

cms/templates/widgets/sequence-edit.html

@@ -39,7 +39,7 @@
               <a href="#" class="module-edit"
                  data-id="${child.location.url()}"
                  data-type="${child.js_module_name}"
-                 data-preview-type="${child.module_class.js_module_name}">${child.url_name}</a>
+                 data-preview-type="${child.module_class.js_module_name}">${child.display_name}</a>
               <a href="#" class="draggable">handle</a>
             </li>
             %endfor