Scaffold out the subspecies pages

[RichardLitt]

Right now, the American Robin page is the only page, because it is the only one which is manually input. The others should be able to be taken from the .tsv file (when do I ever use tabs, elsewhere?) and put into a JSON file, which should automatically fill most fields. Some fields - specifically, the massive text fields - could possibly just be in Markdown until I get a better CMS system set up.