dashboard: help text to vm access

circle/dashboard/static/dashboard/dashboard.less

@@ -1221,3 +1221,8 @@ textarea[name="new_members"] {
     padding: 25px;
   }
 }
+
+#vm-detail-access-help {
+  background: #f9f9f9;
+  margin-top: 20px;
+}

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

@@ -19,9 +19,7 @@
 <h3>{% trans "Permissions"|capfirst %}</h3>
 {% include "dashboard/_manage_access.html" with table_id="vm-access-table" %}
 
-<hr />
-
-<dl>
+<dl class="well well-sm" id="vm-detail-access-help">
   <dt>{% trans "User" %}</dt>
   <dd>
     {% trans "Grants access to the detail page so the users can connect to the virtual machine." %}