Map analysis results on anatomy

The usefulness of the analyzers in TVB is limited by the visualisations which do not show the results on the anatomy.

For the moment, our anatomical visualisations are only showing activity, but they could show as well results of ICA, attached is an example from Mantini et al paper.

Another example is showing the seed region correlation map on the cortical surface.

Some of these visualisation are essential for rest state modelling, and this task is to bring as much as possible the analysis results to the anatomical visualisers.