VectorDataWidget : Add `horizontal/verticalScrollMode` arguments
VectorDataWidget : Add `horizontal/verticalScrollMode` arguments

vdw cleanup - remove overridestretch

hradec/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,appleseedhq/gaffer,hradec/gaffer,boberfly/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,hradec/gaffer,GafferHQ/gaffer,boberfly/gaffer,johnhaddon/gaffer,boberfly/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,ImageEngine/gaffer,boberfly/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,hradec/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,hradec/gaffer