SAM-2441 reverse-merge of r315965. We don't want htmlarea back


git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@315985 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAM-2450 remove references to htmlarea.js


git-svn-id: https://source.sakaiproject.org/svn/sam/trunk@315986 66ffb92e-73f9-0310-93c1-f5514f145a0a