Further steps in KalmanFittter development & Track classification

Several next steps in the KalmanFitter development need to be done in order to achieve a first full prototype, this is a growing issue to concentrate those developments:

Material integration:

• the KalmanFitter needs a propagator with an ActionList<> that contains at least the following actors: ActionList<PreMaterialInteractor, KalmanActor, PostMaterialInteractor > where the first MaterialInteractor is configured to work on pre-update and the second on post-update and full-update. As the ActionList<> does not allow multiple instances of the same Actor, there's a bit thinking to be done, I guess the best would be to encapsulate the actual update code and wrap it into a different-style updaters.
• The pre-post updators should be validated with a MaterialValidation job with runs through withough material splitting and with material splitting.

Outlier logic:

t.b.c.