qmlui: improved ComboBox to support QStringList, QVariant and ListModel
qmlui: improved ComboBox to support QStringList, QVariant and ListModel

Plus, handle a custom value

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