XNAT-2522 Updates to XDAT to support better admin notification for autoenabled users.
XNAT-2550 - You can go to the ChangePassword page without logging in (fixed for guest)
DB-1566 Fixed bug where users cannot register another account with same email as previous account. Fixed small bug in XDATUser.
XNAT-2573 Improved handling for the new fields should a user leave them blank.
XNAT-2550 Fixed bug that prevented going to ChangePassword page from Change Password email.