SAK-27911 add csrf tokens for back/cancel


git-svn-id: https://source.sakaiproject.org/svn/site-manage/trunk@313709 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-27839 auto groups radio buttons not accurate


git-svn-id: https://source.sakaiproject.org/svn/site-manage/trunk@313710 66ffb92e-73f9-0310-93c1-f5514f145a0a