First updates of EGamma Tools in master

...ramework/DerivationFrameworkEGamma/python/EGammaCommon.py

...PhotonSelectorTools/Root/EGSelectorConfigurationMapping.h

...nSelectorTools/python/ConfiguredAsgPhotonIsEMSelectors.py

...tonSelectorTools/python/PhotonIsEMLooseSelectorCutDefs.py

...onSelectorTools/python/PhotonIsEMMediumSelectorCutDefs.py

...onPhotonSelectorTools/python/PhotonIsEMSelectorMapping.py

...tonSelectorTools/python/PhotonIsEMTightSelectorCutDefs.py