LSNBLDR-421; fix caching issue


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@312763 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-421; allow cache to be disabled in LessonsAccess


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@312765 66ffb92e-73f9-0310-93c1-f5514f145a0a