KNL-1173 Add generics to ContentCollection.getMemberResources()

git-svn-id: https://source.sakaiproject.org/svn/kernel@306037 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1176 - Support value of li in security policy


git-svn-id: https://source.sakaiproject.org/svn/kernel@306041 66ffb92e-73f9-0310-93c1-f5514f145a0a