added GluonTag to old FUllHadTreeWriter
adapted cuts for 2012 analysis
adapted PFJetID to new variable names
(the old ones should still be working, but are deprecated since some time)
- added CSVT
- added possibility to not create a histogram of the weights
- added possibility to scale jet by one individual JEC uncertainty sources
- if no MET label is given, don't scale the MET
- only tag jet as b-jet if b hadron is within dR<0.3
- added possibility to tag any nth jet