Incorrect dock widget title bar

[andreikop]

Dock tool bar is drawn incorrectly, if I insert action before title.

https://picasaweb.google.com/lh/photo/KfDYhu-CYQrndp7-b0Poct0jWa0e4BHJ60P61UBnJVc?feat=directlink

I fixed the bug and simplified the code. https://github.com/hlamer/mksv3/blob/master/mks/fresh/dockwidget/pDockWidgetTitleBar.py