fpg_base documentation update.
Updates extrafpc.cfg files so no console window is shown for Windows compiled apps.
ide should use debug interface included in fpGUI instead.
New Rectangle and Point methods introduced in fpg_main

* Moved PtInRect() to fpg_main, from fpg_base
* New Rect and Point utility functions introduced in fpg_main
nicegrid: removed unnecessary fpg_types unit

* The code introduced in fpg_types.pas are now available in fpg_main -
  maybe with slightly different names.
* replaced all references to fpg_types methods with new ones found in
  fpg_main