Merge pull request #550 from edx/peter-fogg/unit-reorder-notification

Show notification on component reorder.

cms/static/coffee/src/views/unit.coffee

@@ -41,7 +41,12 @@ class CMS.Views.UnitEdit extends Backbone.View
           id: unit_location_analytics
 
         payload = children : @components()
-        options = success : => @model.unset('children')
+        saving = new CMS.Views.Notification.Mini
+          title: gettext('Saving') + '…'
+        saving.show()
+        options = success : =>
+          @model.unset('children')
+          saving.hide()
         @model.save(payload, options)
       helper: 'clone'
       opacity: '0.5'