IdP: import existing Tuakiri logout.jsp customizations
IdP: import existing Tuakiri logout.jsp customizations

* Wording we can actually use
* Display ServiceName extracted from metadata if available
* Otherwise, display hostname (extracted from entityId)

University-of-Auckland/AAF-VHO,REANNZ/AAF-VHO,REANNZ/AAF-VHO,University-of-Auckland/AAF-VHO,REANNZ/AAF-VHO,University-of-Auckland/AAF-VHO