Modifications in order to plot the prefit plots.

http://test-cirkovic.web.cern.ch/test-cirkovic/28-10-2014/1/plots/250513/v4.2/2lss_BCat4Plots/ee/
http://test-cirkovic.web.cern.ch/test-cirkovic/28-10-2014/1/plots/250513/v4.2/2lss_BCat4Plots/em/
http://test-cirkovic.web.cern.ch/test-cirkovic/28-10-2014/1/plots/250513/v4.2/2lss_BCat4Plots/mumu/
http://test-cirkovic.web.cern.ch/test-cirkovic/28-10-2014/1/plots/250513/v4.2/3l_tightBCat4Plots/
http://test-cirkovic.web.cern.ch/test-cirkovic/28-10-2014/1/plots/250513/v4.2/4l/