H+->tb in summary table and fixed xsec*BR

H+->tb yields are now shown in summary table.
Analysis of the sample is properly normalized taking into account BR(H+->tb)
Merge branch 'devel'

Conflicts:
	Readme.txt
HTB and TBH stacked together in plots

H+->taunu and H+->tb are now stacked together in the plots
H+->tb decay enabled in datacards and shapes

Currently applied only for mH+=250GeV/c^2 mass point (H->tb sample available only for that)
Committed rev 718 of datacards to svn, containing this changes