update student select menu when rubric is used to grade

Updates the select menu when a rubric is used to grade.

fixes GRADE-349

test plan:
 - Have a course with a teacher and some students
 - Have an assignment that has a rubric configured
 - Go into speedgrader as a teacher
 - Grade a student using the rubric
 - Note that the status icon in the student menu reflects the graded
   status.

Change-Id: I49abfd6f6baf9d1f6a44d12737b01b5c1573e250
Reviewed-on: https://gerrit.instructure.com/129405
Reviewed-by: Spencer Olson <[email protected]>
Reviewed-by: Derek Bender <[email protected]>
Tested-by: Jenkins
QA-Review: Anju Reddy <[email protected]>
Product-Review: Keith T. Garner <[email protected]>

public/javascripts/speed_grader.js

@@ -802,6 +802,7 @@ function initRubricStuff(){
         // submissionAndAssessment comes back with :include_root => true, so we have to get rid of the root
         var student = EG.setOrUpdateSubmission(response.artifact);
         student.rubric_assessments = $.map(submissionAndAssessment.rubric_assessments, function(ra){return ra.rubric_assessment;});
+        EG.updateSelectMenuStatus(student);
       });
 
       $(".rubric_summary").loadingImage('remove');