Made some changes to allow for calculation and propagationg of single photon systematics to diphoton categories
Merge branch 'master' of github.com:h2gglobe/h2gglobe into setupNewSignalSyst

Conflicts:
	AnalysisScripts/massfac_mva_binned/datafiles_massfacmva_legacy.dat
Merge pull request #84 from matthewkenzie/setupNewSignalSyst

Setup new signal systematics