SAM-2442 Showing and hiding rich text editor produces incorrect results

git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@315964 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAM-2441 Javascript error: Missed Files. Reverting removed folders at r314602.

git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@315965 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAM-2443 In questionpool section move, copy and remove buttons are still enabled when there is no question.

git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@315966 66ffb92e-73f9-0310-93c1-f5514f145a0a