D16169: Add option to close Kate when last file closes

[rhkramer at gmail.com]

On Sunday, October 14, 2018 06:43:12 AM Christoph Cullmann wrote:
>   I think that is very confusing ;=)
>   I can understand the logic behind: all views close => application close
>   But I don't really think that: all views close => empty document => that
> view close => application close is really something that is very
> understandable

Just to add a comment from the peanut gallery, that seems very 
understandable...