Binning/HLT plots

- added a script for producing binning plots like this (no data shown):
![eplusjets_met](https://f.cloud.github.com/assets/2600844/2285232/53e6fbe0-9fd2-11e3-944e-1af96521b4a1.png)
- added my HLT plotting scripts for the trigger chapter of my thesis, mostly for reference as only can be run on custom root files
- added lepton pt plots to the massive control plots script