Allow Publications to sort by Authored On Date for publication types filter.

#1533 

In d6, the Publications by Type view sorted publications first by year then by Node Post Date, this was never ported to d7 and should now be functioning. 

It seems the biblio query overrides the views query, so rather than just adding a sort criteria in the publication_type page view, I had to alter the biblio query and add another order by option.