* Moved Slate.h into SlateBasics.h and began shifting less commonly used headers into SlateExtras.h.
* Slate.h now simply includes SlateBasics.h and SlateExtras.h.
* Slate.h includes a deprecated warning now to indicate that SlateBasics.h + specific includes should be used instead.
* Moved dozens of inlined functions using Slate widgets into .cpp files to avoid header dependencies.
* All code samples now include SlateBasics.h and SlateExtras.h so future shifts will not break most those projects, but not trigger the deprecation warning of including Slate.h.
#BUN
[CL 2329610 by Wes Hunt in Main branch]
Added new buttons on the lauch profile results screen ( rerun, and cancel without closing).
Fixed possible crash when trying to populate a non existant profiler window.
#codereview matt.kuhlenschmidt
[CL 2295572 by Chris Gagnon in Main branch]
Device Services Refactoring to create the concept of a physical device.
Game launcher and device viewer UI changes to show these new concepts.
#codereview Max.Preussner, Matt.Kuhlenschmidt
[CL 2290918 by Chris Gagnon in Main branch]
