krita-multi_sensors-cyrille_berger branch

[Cyrille Berger Skott]

Hi

I have started a new branch that add the possibility for the user to select 
multiple sensors for a paintop.

Here is a screenshot of how it looks like:
http://cyrille.diwi.org/tmp/krita/krita-multi-sensors.png

For now the curve is the same for all sensors. Might change in the future, but 
this is kind of a complicated change.

What is currently missing are:
* display of the labels
* individual sensors options

-- 
Cyrille Berger Skott