Egm electron id development

This pull request is for the set of changes including:
   - added producer for 5x5 quantities from Ming
   - added new cut definition for full 5x5 sigmaIEtaIEta
   - added 4 working points for CSA14 Scenario 1 and Scenario 2
   - a few other related changes

My branch contains my simple package TestElectronID for ID validation, you can ignore it or use it as you like.