* 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]
Slate changes:
Allowed hyperlink decorator and hyperlink run to be more easily derived from by moving some functions/variables to protected.
Added new run & decorator for hyperlinks in tutorials that add an icon to the end of the run if required.
Only use icon-style run if in display mode (not in edit mode).
reviewed by Jamie.Dale
[CL 2322460 by Thomas Sarkanen in Main branch]
