Fixing fTest to store bestfit parameters for the best fitting pdf
Merge pull request #258 from nucleosynthesis/nckw-fixing-fTest

Fixing fTest to store bestfit parameters for the best fitting pdf
Picks up correct name for RooCategory to switch multipdf
Merge pull request #259 from nucleosynthesis/nckw-sqrts-in-pdf-index-name

Picks up correct name for RooCategory to switch multipdf