elsevier_package: doctypes addition

* Adds 'Erratum', 'Publisher Note' and 'Addentum'
  in 773__m field for 'err', 'pub' and 'add' doctypes.

* Adds 980__a:'Review' for 'rev' doctype.

Signed-off-by: Georgios Papoutsakis<georgios.papoutsakis@cern.ch>