to what degree session management is supported is different story, e.g. if
there is no kRestoreMainWindows<T>() call (or other method that actually
restores state) then the application is simply started again on login and
placed where it was in the window state it was by the window manager
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
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>