Update UAA 1.6.0 and Login Server 1.5.0

Correctly handle PostgreSQL DB schema migration.
https://www.pivotaltracker.com/story/show/67714674

https://www.pivotaltracker.com/story/show/67246560
Remove the addNew property
Update to
 - UAA 1.6.0 - https://www.pivotaltracker.com/story/show/66667962
 - Login Server 1.5.0 - https://www.pivotaltracker.com/story/show/66667942