--following issue from #730 more qml code
was found that wasnt releasing connect signals
properly. That could create crashes because
already deleted qml objects could receive such
signals. That was observed after qt>=5.9.2
--this works similar with transparency with no-maximized
windows feature but on reverse. e.g. transparency for
non-maximized windows and solidness for maximized ones
--opacity to 1 when applet is active
--when the user uses a semi transparent panel for
un-maximized active windows and the user activates
a pop up for an applet a better visual effect is the
panel to not have any transparency
--improve translation strings and options order
-- the user can choose this behavior from the Tweaks page,
the panel background in shown only when there is maximized
window and it is fully transparent otherwise