[MassifVisualizer] merging kdchart-2.5.1 into master?

[Milian Wolff]

Hey Arnold,

since you are working on kf5 port of massif-visualizer again, should I merge 
the kdchart-2.5.1 branch into master?

There are still a few issues here and there, such as different axis labels 
(1000000000 instead of 10^9), but we can fix that in master as well then, I 
think.

Then you can base kf5 off that? But do note that I have another feature branch 
around which I want to merge into master soonishly, see the mdi-refactor 
branch.

Bye
-- 
Milian Wolff
mail at milianw.de
http://milianw.de