Scale factors

- [x] MC/data efficiency comparison
- [x] ID variables for both channels
- [x] Fitted Z peak for comparison to counting method
- [x] Counting all leptons as independent tags if they pass tag requirements
- [x] Fit the Z peak with exponential + BW
- [x] Add the hadron leg for the 2011 ele+jets trigger
- [x] Analyse different trigger objects from different run periods separately