Updated cards.
Added a ClusterSigma variable to Candidate and Sigma variable to Cluster.
Added a parameter to scale resolutions artificially in the VFPix region.
Removed the Sigma parameter. This is now gotten from the clusters directly.
Added "original" track variables and Sigma to ProcessClusters.
Reset the cluster index for tracks belonging to vertices which are removed, and
clear the vector used to sort clusters before filling it.
Added "original" track variables and removed the Sigma parameter. This is now
gotten from the clusters themselves.