added hasUserModified method so the reports can tell if a student has made a change to an object.
added hasUserModified method so the reports can tell if a student has
made a change to an object.


git-svn-id: fdf63cc6b6871a635be2b727c8623e4c3a9a9ed7@4699 6e01202a-0783-4428-890a-84243c50cc2b

concord-consortium/framework