KNL-101 - Interpret content type if unknown


git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@307352 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-101 - Matching up property names better


git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@307353 66ffb92e-73f9-0310-93c1-f5514f145a0a