BibFormat: passing of user_info for Excel format
BibFormat: passing of user_info for Excel format

* Correctly passes the user_info object to the chain of Excel
  formating functions.

Co-authored-by: Esteban J. G. Gabancho <75a585aac14e4a294e41d8811c6df3e79906651b@cern.ch>
Reviewed-by: Tibor Simko <c7116e45300b163846dc01f3ed02116e3f8ef7a5@cern.ch>

inveniosoftware/invenio-formatter,inveniosoftware/invenio-formatter,tiborsimko/invenio-formatter,tiborsimko/invenio-formatter,tiborsimko/invenio-formatter,inveniosoftware/invenio-formatter