updates to makeGlobeEfficiencyFile

A minor fix to makeGlobeEfficiencyFile and the first version of the scale factor file.
PhotonID results from: https://indico.cern.ch/getFile.py/access?contribId=45&sessionId=8&resId=0&materialId=slides&confId=274015
Used lates Zmmg results:  https://hypernews.cern.ch/HyperNews/CMS/get/AUX/2013/10/09/13:04:09-63641-electronVeto_eff and latest file from Martina /afs/cern.ch/user/m/malberti/public/scaleFactors/vtxIdScaleFactorFromZmumu_2012_legacypaper_v0.root