Is it possible to have an option to make "static diff view" the default behavior?

[mdel]

Today, when you open a diff view window, exploring the repository (e.g clicking on other object of the branch explorer) will modify the context of the opened diff view.

On Plastic GUI "classic", there was this "shift" key feature, which does not does not work on PlasticX, I have open an issue report. 

But more than the "shift" key solution to open static diff view. I wish for:

- static diff view to be the default (at least having an option to do so)

- clearly differentiating between window which are static, from the one which is dynamic.