Figures: refactored and shared code for figure functions

zUtil_Drawing/gtFigureAddExtras.m

zUtil_Drawing/gtFigureCreateClusterIPF.m

zUtil_Drawing/gtFigureCreateClusterKAM.m

zUtil_Drawing/gtFigureCreateClusterODF.m

zUtil_Drawing/gtFigureCreateEBSDMapIPF.m

zUtil_Drawing/gtFigureCreateExtras.m

zUtil_Drawing/gtFigureCreateFromPicture.m

zUtil_Drawing/gtFigureCreatePhase6D.m

zUtil_Drawing/gtFigureCreateTwinClusterKAM.m

zUtil_Drawing/gtFigureSaveToFile.m

zUtil_Drawing/gtFigureSetSize.m

zUtil_Imaging/gtVolumeGetSlice.m