r22 JetTagging: fixes_toward_Run3
Fixes for b-tagging DQ towards Run 3 data taking:
- remove reference to tagger name in cxx (easier to change tagger)
- temporary skip pre-selection for early runs (avoid empty plots in low statistics runs)
- additional plots for PV and tracks multiplicity divided by (reduce pile up effect on runs with different )
Test Webdisplay: https://atlasdqm.cern.ch/webdisplay/test/56/physics_Main/run_348885/run/JetTagging/