EVALSYS-1181 and 1182: update markup and css to support Matrix NA option.
EVALSYS-1181 and 1182: update markup and css to support Matrix NA option.

git-svn-id: 32fdc94e4b0685295c55e01dff918276da92ad7d@78491 fdecad78-55fc-0310-b1b2-d7d25cf747c9

sakai-mirror/evaluation,sakai-mirror/evaluation