Enabled TDRStyle for kNN monitor plots

kNN monitor plots now squared and with all CMS specifications.
Personalized re-enabling of horizontal error bars for visualization purposes and uniformity with old format
Not show anymore ratio for Rtau plot

It is not relevant
Merge branch 'devel'
Merge branch 'devel'
Merge branch 'devel'
Moved BR(H->taunu) to CommonDefinitions

For integration with datacards maker and clarity.
Also, yields for plot too are now scaled.
Update error on luminosity estimate (ICHEP 2012)

The previous value was a leftover of 2011 analysis. Most recent one up to today is ICHEP 2012 https://twiki.cern.ch/twiki/bin/view/CMS/TWikiLUM
Consistent TBH signal normalizations for tables/plots/datacards

Implemented a fixed convention. 234 for datacards (in order to have the limit in percentage of the ttbar xsec)
1.1 for tables and plots (production cross section of the tbh samples)
Fixed normalizations in LandSShapesProducer as well (must automatize that and fix Zee,mumu,tautau