Electron fex hypo integration

...ypothesis/TrigEgammaHypo/python/TrigL2ElectronHypoTool.py

.../TrigHypothesis/TrigEgammaHypo/src/TrigL2CaloHypoTool.cxx

...igHypothesis/TrigEgammaHypo/src/TrigL2ElectronHypoAlg.cxx

...TrigHypothesis/TrigEgammaHypo/src/TrigL2ElectronHypoAlg.h

...gHypothesis/TrigEgammaHypo/src/TrigL2ElectronHypoTool.cxx

...rigHypothesis/TrigEgammaHypo/src/TrigL2ElectronHypoTool.h

...igSteer/DecisionHandling/DecisionHandling/HLTIdentifier.h

Trigger/TrigSteer/DecisionHandling/src/HLTIdentifier.cxx

Trigger/TrigSteer/ViewAlgs/src/EventViewCreatorAlgorithm.cxx

.../TrigValidation/TrigUpgradeTest/share/egamma.withViews.py