add grain dists to sim result handling

Created by: Lars Dalby

Imported comments:

By Lars Dalby on 2019-01-02T14:00:52.712Z

mentioned in commit 250c603f

By Lars Dalby on 2019-01-02T14:00:52.538Z

closed via merge request !34

By Lars Dalby on 2019-01-02T14:00:46.844Z

mentioned in merge request !34

By Lars Dalby on 2018-12-09T18:46:00.892Z

created branch 55-add-grain-dists-to-sim-result-handling