Merge pull request #2 from mmarionncern/MPAF_genId

Add gen matching selection, charge mis identification, fake leptons prompt leptons
submitting jobs to batch
latest version, looping on leptons rather than electrons/muons, uncompiled/tested
add skimming option in MPAF
finalize skimming options at basic level for SUSYSSDL class
last commit needed for skimming procedure