update susycross sections
Fix MM Trigger weight bug
Small changes -- agreement with Lea
made ntuple reader into a subclass of ewkanalysis
Made RunEwkAnalysis more modular to support inhertiance to the ntuple mkaer
commit
Merge branch 'SusyTools-03-21' of github.com:UPenn-SUSY/PennSUSYFrame into SusyTools-03-21
restructuring ewkanalysis a bit more
Adding Lea BDT files in /data
Updates for BDT variables
Merge branch 'SusyTools-03-21' -- adding bdt stuff, all new susytools stuff

Conflicts:
	EwkAnalysis/include/EwkNtupleMaker.h
	EwkAnalysis/src/EwkNtupleMaker.cxx
	PennSusyFrameCore/include/ObjectDefs.h
	PennSusyFrameCore/src/ObjectDefs.cxx
cleaning up ntuple maker
egamma sf bugfix introduced with sys