Ideal 2015 geometry scenario
the merged Scenario of TrackerCSA14+LS1BPixRepair was added; the details can be found in presentation from November 20th, Alignment meeting
https://indico.cern.ch/event/342234/session/0/contribution/12/material/slides/1.pdf
Fix double inversion of MET covariance matrix
replace fabs with std::abs
guard the nPho histograms from double counting, should fix HI issues
make no L1 postLS1 customizations beyond new menu if Fast Simulation detected
Add new L1Emulation sequence to all paths with simGctDigis, switch l1extra to sim or unpacked digis based on context
remove legacy simGctDigis from upgrade L1T emulation
fix python crash when no L1 simulation but customs called
updated PV label for electrons
remove some commented lines
fix customization when unschedule mode is used
no cout
initialize func ptrs and also other members, for completeness
Forward port timestamp fix to CMSSW_7_3
Merge pull request #6647 from slava77/CMSSW_7_3_0_pre3/fixHCALOOTcrash

 fix occasional crash in PulseShapeFitOOTPileupCorrection for zero processed events in a job (as in #6646 )
Merge pull request #6636 from srimanob/fix-customize-73X

fix customization when unschedule mode is used (73X)
Merge pull request #6651 from mommsen/useValidTimeStampInAnyCase_73

Forward port timestamp fix to CMSSW_7_3
Merge pull request #6553 from cms-met/MM_MET_112114

Fix double inversion of MET covariance matrix
Merge pull request #6510 from ianna/ideal2015-scenario

Ideal 2015 Geometry Scenario