Merge pull request #1086 from edx/giulio/self-assess-fix

Conditionalize written feedback area.

lms/templates/combinedopenended/combined_open_ended_results.html

@@ -27,9 +27,11 @@
                 </span>
             </div>
             ${result['result'] | n}
+            % if result.get('feedback'):
                 <div class="written-feedback">
                     ${result['feedback'] | n}
                 </div>
+            %endif
         </div>
     %endif