CUI: buttonbar: add back the margin-right to the layout-center, because there are use-cases where we need the spacing (buttonbars within left AND center AND right layouts)
CUI: buttonbar: add back the margin-right to the layout-center, because there are use-cases where we need the spacing (buttonbars within left AND center AND right layouts)

programmfabrik/coffeescript-ui,programmfabrik/coffeescript-ui,programmfabrik/coffeescript-ui,programmfabrik/coffeescript-ui