* 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]
- changed rigcontrol to trasnformbase as right now it only does transform base, and in the future we should add more controllers
- added clear bone name
- added "reset base pose" option for opting back to original mesh pose
- fixed so that rig nodes doesn't have to be mapped
[CL 2302778 by Lina Halper in Main branch]
