Adding a few updates for reference selection from top PAG
Updatding electron selector to top PAG recommendations
Merged rappoccio_SelectorUtils_53x from repository rappoccio
Merge branch 'CMSSW_5_3_X' of https://github.com/cms-sw/cmssw into from-CMSSW_5_3_14_patch1
Merge pull request #1951 from rappoccio/rappoccio_Update_SelectorUtils_53x

Selector Utils : Updating electron and muon selections to official top PAG selections