Merge pull request #1 from mverzett/master

updates
new variables in fakerate den plots
Merge branch 'master' of https://github.com/taroni/UWHiggs
added target luminosity
added luminosity ward, should it be moved to meta? Added significance computation
added summer13 MVAID
added option to print only the mass plots
restructured to allow automatic optimization
restructured to allow automatic optimization
added summer_2013_eid
slight modifications
added new eletron MVA
reduced logging threshold to warning
added new eletron MVA
transparent modifications to the code to make optimization faster: don't book plots that are not needed in optimization mode, change lepton id signature
bugfix
added new eletron MVA
changed id iso function signature
added ward to allow running in batch
small changes