qmlui: add some padding to combo box labels
qmlui: add some padding to combo box labels

sbenejam/qlcplus,sbenejam/qlcplus,mcallegari/qlcplus,sbenejam/qlcplus,sbenejam/qlcplus,plugz/qlcplus,mcallegari/qlcplus,plugz/qlcplus,kripton/qlcplus,plugz/qlcplus,kripton/qlcplus,sbenejam/qlcplus,mcallegari/qlcplus,plugz/qlcplus,kripton/qlcplus,sbenejam/qlcplus,mcallegari/qlcplus,sbenejam/qlcplus,plugz/qlcplus,kripton/qlcplus,mcallegari/qlcplus,plugz/qlcplus,mcallegari/qlcplus,kripton/qlcplus,kripton/qlcplus,plugz/qlcplus,mcallegari/qlcplus,kripton/qlcplus