SAK-26198 assignment submission confirmation consistency. Patch from Brian J


git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@310352 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-26349 improve handling when missing groups. Patch from Brian J


git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@310353 66ffb92e-73f9-0310-93c1-f5514f145a0a