Preparation of the multi-dimensional fit
Putting things together for the statistical analysis including a splitting of the geq2jets category into several categories corresponding to the kinematic discriminant binning (for SM only, for the moment).
This MR includes also necessary changes to incorporate recent developments (NRB,...) into the code.
Instructions have been updated as well (I have tried to make them as complete as possible).
Sorry for the several merge commits inside this MR. I prefered to do separate commits with them, in order to avoid possible rebasing issues.
Edited by Nicolas Postiau