Use Backbone notifications for setting graded status.

cms/djangoapps/contentstore/features/course-overview.feature

@@ -1,7 +1,7 @@
-Feature: Overview Toggle Section
-    In order to quickly view the details of a course's section or to scan the inventory of sections
+Feature: Course Overview
+    In order to quickly view the details of a course's section and set release dates and grading
     As a course author
-    I want to toggle the visibility of each section's  subsection details in the overview listing
+    I want to use the course overview page
 
     Scenario: The default layout for the overview page is to show sections in expanded view
         Given I have a course with multiple sections
@@ -57,3 +57,9 @@ Feature: Overview Toggle Section
         And I click the "Expand All Sections" link
         Then I see the "Collapse All Sections" link
         And all sections are expanded
+
+   Scenario: Notification is shown on grading status changes
+        Given I have a course with 1 section
+        When I navigate to the course overview page
+        And I change an assignment's grading status
+        Then I see a notification

cms/djangoapps/contentstore/features/course-overview.py

@@ -118,3 +118,9 @@ def all_sections_are_collapsed(step):
     subsections = world.css_find(subsection_locator)
     for index in range(len(subsections)):
         assert_false(world.css_visible(subsection_locator, index=index))
+
+
+@step(u"I change an assignment's grading status")
+def change_grading_status(step):
+    world.css_find('a.menu-toggle').click()
+    world.css_find('.menu li').first.click()

cms/static/js/views/grader-select-view.js

@@ -81,9 +81,18 @@ CMS.Views.OverviewAssignmentGrader = Backbone.View.extend({
 
 	      this.removeMenu(e);
 
+              var saving = new CMS.Views.Notification.Mini({
+                  title: gettext('Saving') + '…'
+              });
+              saving.show();
+
 	      // TODO I'm not happy with this string fetch via the html for what should be an id. I'd rather use the id attr
 	      // of the CourseGradingPolicy model or null for Not Graded (NOTE, change template's if check for is-selected accordingly)
-	      this.assignmentGrade.save('graderType', $(e.target).text());
+	      this.assignmentGrade.save(
+                  'graderType',
+                  $(e.target).text(),
+                  {success: function () { saving.hide(); }}
+              );
 
 	      this.render();
 	}