BibAuthorID: Hoover

Since Hoover is a CLI tool it's better if it can either read from the config file or let the queue to be specified on the CLI. 
E.g. see:
https://github.com/inveniosoftware/invenio/blob/master/config/invenio.conf#L1756
https://github.com/inveniosoftware/invenio/blob/master/config/invenio.conf#L1894
https://github.com/inveniosoftware/invenio/blob/master/config/invenio.conf#L2471