update to sf files
tth at 7 TeV implemented
Scale R9 for cic only
Imported GBR MVAs (switched off by default)

also addressed #233
Merge pull request #238 from martinamalberti/topic_r9scaling_forCiC

Scale R9 for cic only
Merge pull request #237 from matteosan1/topic_effFile

update to sf files
Merge pull request #239 from musella/topic_gbr_diphomva

Imported GBR MVAs (switched off by default)
Merge pull request #240 from michelif/topic_ttH7TeV

tth at 7 TeV implemented
fix sign in r9 correction
Fixed typo in GBR weights file name
Merge pull request #242 from musella/topic_gbr_diphomva

Fixed typo in GBR weights file name
Merge pull request #241 from martinamalberti/topic_r9scaling_forCiC_fix

fix sign in r9 correction