SAM-1010: edit settings fails if there are multiple groups with the same name

git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@307016 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAM-2302: Auto-Submitted Assessment not linked to student name in Total Scores if no work saved

git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@307017 66ffb92e-73f9-0310-93c1-f5514f145a0a