Vbf 13 tev hlt

* Introduced deltaPhi requirement for the jetFilter at HLT.
* Introduced findCSV function to include all the jets in the CSV-ordered jet collection
Details on the VBF-HLT path are given here
https://indico.cern.ch/event/339419/contribution/5/material/slides/1.pdf
https://indico.cern.ch/event/339419/contribution/5/material/slides/7.pdf
@silviodonato
Thou shalt not `using namespace std;` in a header.