Enable to customize history steps?

Hi,

I just realized jib history is filled using tool name (`created_by`) which sounds ok but this array (history) is used to show the steps most of the time so it should container the data related to the layer.
One common issue is that if you create 3 layers with jib you get 3 times the same "jib" data and no info on what is done in the step.
As of today I think there is only a global string per container build and not one per layer, would it be possible to make it more flexible to be able to use UI reading these data?

Romain