Add histos fot Muon time of flight and energy loss
Merge branch 'valid_histos_for_MuonTof_enLoss' of github.com:mileva/cmssw into gem-sim-validation-for-gemsw

Conflicts:
	Validation/MuonGEMHits/interface/GEMHitsValidation.h
	Validation/MuonGEMHits/src/GEMHitsValidation.cc