Add n_gen parameter somehow
For the correct weighting of neutrino events the number of generated events per file of a production needs to be passed on somehow. I was using it this way:
Give this information to the FileBinner/FileGraph, pass it on to the mc_info_extr and use it there in the neutrino case, otherwise just dont use it. Not sure if that is the best way, but surely easy. In case this is of interest, I include the changes in a merge request.