Drop down lists of scientific names should also display the synonyms

For example, typing "Bufo boreas" does not display Bufo boreas because it is listed as a synonym of Anoxorys boreas.  So.. we need to fix the drop-down list to display synonyms.

e.g.
https://api.gbif.org/v1/species/suggest/?q=Bufo%20bo&rank=species

