We don't yet have a real QML tab widget (https://bugs.kde.org/show_bug.cgi?id=394296)
so we have to manufacture our own by combining a TabBar with a frame in which the
This patch slightly improves the look and feel of our manufactured tab widget
by moving the tab portion down a bit so it overlaps the frame, which does a
better job of mimiching the QWidgets version. It's not perfect, but it's at
least no worse with all the themes I tried, and for some it looks better.