update photon effective areas (to be used for production V12)

Created by: fojensen

when I updated the cuts for the photon ID in a previous PR: https://github.com/TreeMaker/TreeMaker/pull/191 I forgot to also update the effective areas

this current PR will bring us to this photon id: https://twiki.cern.ch/twiki/bin/view/CMS/CutBasedPhotonIdentificationRun2#SPRING15_selections_25_ns and these effective areas: https://twiki.cern.ch/twiki/bin/view/CMS/CutBasedPhotonIdentificationRun2#Selection_implementation_details

see validation plots here: http://www-hep.colorado.edu/~fjensen/12112016_photonEffAreaFix/ comparing HT, MHT, NJets, and photon pt, eta, phi before and after the changes

this does not be implemented until necessary for production v12