qmlui: add fade in/out controls to Scene editor
qmlui: add fade in/out controls to Scene editor

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