Rename species count to taxa count - Map area pop up

[javier-molina]

The pop up displayed when selecting an area in a map displays as first entry 'species count' but it is indeed counting not only species but also subspecies and even genus hence it is best to label 'taxon count'.

Steps to reproduce:

1. Search for genus Senna in ALA: https://bie.ala.org.au/species/https://id.biodiversity.org.au/taxon/apni/51300347
2. Click view and download occurrence records, and then swap to the map view: https://biocache.ala.org.au/occurrences/search?q=lsid:https://id.biodiversity.org.au/taxon/apni/51300347#tab_mapView
3. Draw a rectangle on the west coast of Western Australia. The pop-up window for this tells me that the rectangle contains 338 records across 27 species

4. Click search for records in this area: https://biocache.ala.org.au/occurrences/search?q=lsid%3Ahttps%3A%2F%2Fid.biodiversity.org.au%2Ftaxon%2Fapni%2F51300347&qualityProfile=ALA&qc=-_nest_parent_%3A*&wkt=MULTIPOLYGON(((112.99804598093033+-22.608939952085873,112.99804598093033%20-25.02090651422749,117.74413973093033%20-25.02090651422749,117.74413973093033%20-22.608939952085873,112.99804598093033%20-22.608939952085873)))#tab_mapView
5. On the left hand panel, click choose more in the taxon section
6. In the pop-up that appears, there are 27 entities, but many of them are not at the species rank. In fact, only 13, less than 50%, are actual species. The others constitute varieties, subspecies, and one entity at the genus level