Added pvRecoSequence_cff.py which got lost between 53x and 62x
Added a 2D histogram to monitor MC vertices vs BX number: 2nd step
Added a 2D histogram to monitor MC vertices vs BX number
New root macros added
Include needed commits of DPGAnalysis/SiStripTools into validation_recovertex-70x
New cfg and crab cfg file to run PV and BS analyzers
Merge pull request #3315 from venturia/validation_recovertex-70x

Macros and EDAnalyzers in Validation/RecoVertex (back-port from 71x)