First migration pass for muon for DiLeptonDQM:
1. Moving to PF && PFIso
2. Muoving to EI PF muons
3. Updating to 2012 loose (DiLepton) reference selection
cosmetic changes for di-lepton DQM
First migration pass for muon for SingleLeptonDQM:
    1. Moving to PF && PFIso
    2. Muoving to EI PF muons
    3. Updating to 2012 loose && tight reference selection