for applications that do not create main window (e.g. create dialog window
instead) the tray feature is not enabled
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
see the following commit in kdelibs repo:
4b632fcae67da3b95e69e954fa2e581a42f4c53c
currently enabled only for a few applications until more tests are done
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>