Adding four new methods:

  get_production_name()
  get_short_name()
  get_common_name()
  get_scientific_name()

These will return the corresponding meta values (for keys
'species.common_name' etc.) once these have been inserted
in the Core databases (during the release process of 59).

Details:
http://www.ebi.ac.uk/seqdb/confluence/display/EnsGen/Meta+Changes+for+59+and+release+6