Switch Layer or Create New, and Move Plot Order in a Group in Layer Contents Dialog

Switch Layer or Create New to easily add or remove plots on different layers in graphChange the order of plots within a group

ORG-12416

ORG-11004

Switch between layers in Layer Contents dialog to easily add plot(s) to each layer.

Change plot order within a group with no need to ungroup first

Create new layersand add plots to it in Layer Contents dialog.