Request for review

[LukasT.dev@gmail.com]

Hi,

here is the patch that enables the categories in the combo box.
Would you please test it?

I did testing and I did not found any regressions.

There was some problem when colorspace change occur and 
the paintop does not support that colorspace. I print just warning.
Currently we don't have that kind of paintop, so it should not be problem.

Can I commit?

Patch is here 
http://valdyas.org/~lukast/categories.patch