Icons rearrangement proposal

[Ronan Zeegers]

> I see some problems.
>
> -The color sampler is not a drawing tool but rather a view tool
> -The crop tools is not a view tool (you call it image tools) but manipulation
>   
Those 2 tools are indeed a bit special and hard to classify.
I've put the color sampler there since it's related to color like the 
paint bucket and the gradient tools. Do you have an other proposition?
The crop tool is hard to classify too. It can be in the Manipulation 
area has well