[Factsheets] MF - model history

[EvaWie]

@ludee Do we want to add a question concerning the model history?

Maybe creating a list like that: ... version 3 - 2011 - primary changes version 4 - 2015 - primary changes

[Ludee]

That's a good idea! Keep it simple: "Model history": "year" + "comment"

[EdithaK]

@Ludee can you do this? pls assign the rigth person.