Fix some issues with displaying grader info on rubric

common/lib/xmodule/xmodule/combined_open_ended_modulev1.py

@@ -448,7 +448,7 @@ class CombinedOpenEndedV1Module():
         elif task_type== "selfassessment":
             rubric_scores = last_post_assessment
             grader_types = ['SA']
-            feedback_items = []
+            feedback_items = ['']
             last_post_assessment = ""
         last_correctness = task.is_last_response_correct()
         max_score = task.max_score()

lms/templates/open_ended_rubric.html

@@ -25,9 +25,9 @@
                             <div class="rubric-label">
                                 ${option['points']} points : ${option['text']}
                             </div>
-                        % elif combined_rubric == True
+                        % elif combined_rubric == True:
                             <div class="rubric-label">
-                                %for grader_type in option['grader_types']
+                                %for grader_type in option['grader_types']:
                                     ${grader_type}
                                 %endfor
                                 ${option['points']} points : ${option['text']}