SAK-23645 check for existence of term dropdown to avoid JS error. Yuki patch.


git-svn-id: https://source.sakaiproject.org/svn/site-manage/trunk@125090 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23648 JS error because of no escaping. Patch from Juan Jose


git-svn-id: https://source.sakaiproject.org/svn/site-manage/trunk@125092 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23257 Add option to remove ability for instructors to assign the instructor role to other users. Patch from Brian Jones.


git-svn-id: https://source.sakaiproject.org/svn/site-manage/trunk@125095 66ffb92e-73f9-0310-93c1-f5514f145a0a