Fix wrong ftHit error and add states in ParamKalman
This fixes an incorrect hit uncertainty of ftHits (on v2::track) which caused some problems in the ParameterizedKalmanFit. Somehow this problem escaped our attention when the Kalman filter was changed. Even this is now fixed, there are still differences between the hit uncertainties used in this version and the ones obtained from the MeasurementProvider. The Pr algorithms use different parametrizations for these uncertainties. E.g.:
Maybe this can be unified at some point.
In addition, two more states are added to the output track created by the ParameterizedKalmanFit and the algorithms used for tuning and performance checks are updated.
FYI: @sstahl