SAK-25712 clean up base pom

git-svn-id: https://source.sakaiproject.org/svn/sakai/branches/sakai-trunk-experimental@134409 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25713 remove roster and profile classique from .externals

git-svn-id: https://source.sakaiproject.org/svn/sakai/branches/sakai-trunk-experimental@134413 66ffb92e-73f9-0310-93c1-f5514f145a0a