SAK-25801 create a branch to implement userPrefs EntityProvider functions

git-svn-id: https://source.sakaiproject.org/svn/user/branches/SAK-25801@306536 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25801 impl of entityprovider functions

git-svn-id: https://source.sakaiproject.org/svn/user/branches/SAK-25801@306538 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25801 added entity provide support for retrieving and setting preference properties

git-svn-id: https://source.sakaiproject.org/svn/user/branches/SAK-25801@306915 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25801 userPrefs entity provider enhancements

git-svn-id: https://source.sakaiproject.org/svn/user/trunk@306916 66ffb92e-73f9-0310-93c1-f5514f145a0a