fix from Sloan: proc to delete all notifications for a user, which will be used later when we have callbacks to call things like this when we delete a user from core
Oracle9i porting changes - Changed procedure names from delete to del - Changed view declaration to use actual column names - Changed "rel_constraints_violated_one" and "rel_constraints_violated_two" (http://openacs.org/forums/message-view?message_id=81045)