Merge request of new tool docker

[Cyrille Berger Skott]

On Wednesday 05 January 2011, Boudewijn Rempt wrote:
> > Fine with me. However, I am not quiet sure why this docker deserve a
> > lock  (more than the other ones), I wonder if the lock button and tab
> > button should not be moved to the title bar.
> 
> I like that idea.
Or instead have a menu entry lock widget, like there is one for the plasma 
desktop.

-- 
Cyrille Berger Skott