SAK-22205 - Added property for gradebook item export format


git-svn-id: https://source.sakaiproject.org/svn/config/trunk@311848 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-22204 Adding property to default


git-svn-id: https://source.sakaiproject.org/svn/config/trunk@311849 66ffb92e-73f9-0310-93c1-f5514f145a0a