LSNBLDR-199; remove unnecessary javascript; get icons from skin


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/branches/lessonbuilder-1.4.x@125551 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-231; change various strings to text


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/branches/lessonbuilder-1.4.x@125552 66ffb92e-73f9-0310-93c1-f5514f145a0a