Adde option to set a dock widget as central widget. It influences resizing behavior of the splitters. The central widget will be stretched with the main window and remaing dock widgets and threir respective areas will be resized only vertically if docked left or right and horizontaly if docked top or bottom
Number of warnings like this has been fixed
DockWidget.h:62:9: warning: class 'DockContainerWidgetPrivate' was previously declared as a struct [-Wmismatched-tags]
Also in ads_globals.cpp Clang didn’t like how that code setup so I changed it to what I think is the correct way. This would be good to get verified.
