LSNBLDR-444; allow hiding the lessons folders in resources


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@315916 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-445; simplified chinese update


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@315917 66ffb92e-73f9-0310-93c1-f5514f145a0a