SAK-25847 TA now can only see submissions within the groups they are allowed to grade

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@307175 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25863 Determine appropriate view for events from alternate calendar

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@307177 66ffb92e-73f9-0310-93c1-f5514f145a0a