Merge pull request #18 from jhgoh/master

JEC uncertainty from UncertaintySources file
New ntuple booking interface
Bugfix about typo.
Merge pull request #1 from geonmo/newBooking

Bugfix about typo.
Merge pull request #22 from jhgoh/newBooking

New booking, tested by Geonmo, checked ntuple is OK.
moved uncertainty producer into one
fixed cfg files
Do not use Ref
Merge pull request #23 from jhgoh/unifiedJetProducer

Unified jet producer