SAK-25784 fixing up the conversion scripts


git-svn-id: https://source.sakaiproject.org/svn/reference/trunk@309229 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-329 fix LessonBuilder SQL scripts to use proper sizes for userId and groupId and move the scripts into official reference/docs/conversion


git-svn-id: https://source.sakaiproject.org/svn/reference/trunk@309238 66ffb92e-73f9-0310-93c1-f5514f145a0a