Merge pull request #4563 from Stanford-Online/stv/jsinput/cdata

Wrap JSInput Python code in CDATA section

common/lib/xmodule/xmodule/templates/problem/jsinput_response.yaml

@@ -5,6 +5,7 @@ metadata:
 data: |
       <problem display_name="webGLDemo">
       <script type="loncapa/python">
+      <![CDATA[
       import json
       def vglcfn(e, ans):
         '''
@@ -22,6 +23,7 @@ data: |
         selectedObjects = state["selectedObjects"]
         return selectedObjects["cylinder"] and not selectedObjects["cube"]
         '''
+      ]]>
       </script>
       <p>
       The shapes below can be selected (yellow) or unselected (cyan).