The source project of this merge request has been removed.
Datacards improvements
CAUTION: this MR builds on !132 (merged) (merge the oldest one first...).
It contains all the changes that were needed to make the datacards work with Combine. It's still not perfect, a lot of uncertainties are missing, there are still things to understand (uncertainties on Instr.MET, namely)... but it's more or less working.
(Actually, Combine still doesn't run properly with these datacards, but that's only because of the huge scale uncertainties on top/WW with the Stewart-Tackman prescription. It should be temporary as this will be data-driven.)