Add Updated Cross Section printout to default sequence, and update GenParticle selection for GenJets

"Loose Ends" from the generator side for Run 2 MC production:

1) Add updated cross section analyzer to the default sequence so that printout in interactive running has the best estimate of the cross section in all combinations of lhe/not, matching/not, gen filter/not.

2) Change config for GenJets to no longer exclude resonance decay products, since this cannot be done in a robust and generator-agnostic way.  (Old config would lead to decay products being excluded or not depending on generator and event properties.)


ROOT is inconsistent in its error reporting about missing dictionaries. However, our policy is all classes in the Event and all classes held by those closes recursively should have dictionaries.