Merge pull request #2 from jjswan33/master

Plugin for Jet Substructure
Remove jet substructure part, since it is now in a separate calculator
Added missing std
Adapt to change in interface of el selector
Adapt JEResolution to latest prescription
Add PF electron and muon selectors
Update btag SF to EPS13 prescription
Remove useless defaults, they could be dangerous
Specify use of MC b-tag efficiencies
Add new 2012 ttbar b-tag efficiencies
Tool to get PU-MC event weight
bug-fix
Include laser event filter
Utility to check whether a file exists
Merge pull request #1 from cms-ljmet/master

Pull everything Thomas did into my working area.