[Rivet] Style inconsistency in plot titles

[David Grellscheid]

Hi all,

I just noticed an inconsistent handling of the Title feature in the plot 
descriptions. E.g. in CMS_2014_I1303894, the plot titles are all

 > CMS sqrt(s)=7 TeV L_int = 5 fb

which is different from most of the other analyses, which use a 
descriptive name of the plotted observable. I can understand the need to 
put this useful info somewhere directly on the plot, but can we come to 
a unified prescription here?

Thanks,

   David