resources: download and create icon

circle/dashboard/templates/dashboard/vm-detail/resources.html

@@ -47,14 +47,18 @@
     <h3>
       {% trans "Disks" %}
       <div class="pull-right">
+        {% if op.download_disk %}
 	<a href="{{op.download_disk.get_url}}" class="btn btn-success btn-xs
-		operation operation-{{op.download_disk.op}} btn btn-default
-		btn-xs"><i class="icon-{{op.download_disk.icon}}"></i>
+		operation operation-{{op.download_disk.op}} btn btn-default">
+	  <i class="icon-{{op.download_disk.icon}}"></i>
 		{{op.download_disk.name}} </a>
+	{% endif %}
+        {% if op.create_disk %}
 	<a href="{{op.create_disk.get_url}}" class="btn btn-success btn-xs
-		operation operation-{{op.create_disk.op}} btn btn-default
-		btn-xs"><i class="icon-{{op.create_disk.icon}}"></i>
+		operation operation-{{op.create_disk.op}} btn btn-default">
+	  <i class="icon-{{op.create_disk.icon}}"></i>
 		{{op.create_disk.name}} </a>
+	{% endif %}
       </div>
     </h3>