Data represents the data of the first 8 nodes, which are the basic and topmost level.
Bugfix: children data has an ID instead of key. Removed cruft.
Instead of fetching the complete information for every children (lot of requests), we do one general request for the children, which provides basic information. Then, only if needed, we make request for further information, reducing the latency. This last part has not been implemented yet.
Merge remote-tracking branch 'SpeciesTree/master'