LSNBLDR-312; update help text


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@131854 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-312: further help text update


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@131856 66ffb92e-73f9-0310-93c1-f5514f145a0a