[Dune] Notification from Dune

[Christian Engwer]

Hi,

> FS#142 - Can't use dgfparser for Alberta and ALU at once
> User who did this: - Robert Klöfkorn (robertk)
> 
> ----------
> Maybe that's because there is no specialisation for ALU3dGrid, because
> it is DEPRECATED !!!!!!!
> Use ALUSimplexGrid instead! 
> ----------

If it doesn't work we should remove it for 1.0. User would only get
confused if there are deprecated classes.

Cheers Christian