Swap b tag for span

common/lib/xmodule/xmodule/css/combinedopenended/display.scss

@@ -120,7 +120,7 @@ div.combined-rubric-container {
     }
   }
 
-  b.rubric-category {
+  span.rubric-category {
     font-size: .9em;
   }
   padding-bottom: 5px;

common/lib/xmodule/xmodule/js/src/combinedopenended/display.coffee

@@ -4,7 +4,7 @@ class @Rubric
   # finds the scores for each rubric category
   @get_score_list: () =>
     # find the number of categories:
-    num_categories = $('b.rubric-category').length
+    num_categories = $('span.rubric-category').length
 
     score_lst = []
     # get the score for each one
@@ -23,7 +23,7 @@ class @Rubric
 
   @check_complete: () ->
      # check to see whether or not any categories have not been scored
-    num_categories = $('b.rubric-category').length
+    num_categories = $('span.rubric-category').length
     for i in [0..(num_categories-1)]
       score = $("input[name='score-selection-#{i}']:checked").val()
       if score == undefined