SAK-23923 - Unable to remove a GB category using IE 8



git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@129853 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23923 - Added getAttribute for component too


git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@129854 66ffb92e-73f9-0310-93c1-f5514f145a0a