Apply all MC correction factors

• For the comparison of data and MC, next step will be looking for data control samples
  1. Add PU re-weighting : use CMSSW package with input root file which is from my previous bp->bH analysis
  2. Top pT re-weighting : included in hard code
  3. B tagging SF : included in new class
  4. Lepton ID or iso SF : include in new class for electron and muon
  5. JER : included in Jet.h
• All correction's systematic uncertainties are included, instead of JES which is without SF.
• Add more plots and change the code structure
  1. Add plots for more information to compare data and MC
  2. Move all important plots to final filling part, in order to make code easy to maintain and read.