[NTG-context] Custom \unknownreference and \dummyreference; plus custom unknownreference in m-bib

[Taco Hoekwater]

Tobias Burnus wrote:
> 
> \let\normalunknownreference\unknownreference

I deduced that :-)

> Well, I have the feeling that the whole \unknownreference does not work,
> but only the \dummyreference does.

It works for me :-/

Taco