Change Species API

[mdoering]

Consider the following options:

(A) Deprecate Species API v1

• and keep it running with stale current data
• Expose Checklistbank thru a V2 API: expose only the ones registered in GBIF, keeping in mind that CoL/Checklistbank use compound keys

(B) Keep Species API v1

• expose the old clb content with global integer keys. Stop indexing new data

• add new query parameter to select a taxonomy. If not present default to the backbone and the old content for at least a year until we will switch, remove the old clb and default to the new col checklist

• add datasetKey UUID and make all keys strings

• Implications to Python and R libraries

• Implications for the current UI

[djtfmartin]

Document listing the work involved is here: https://docs.google.com/document/d/10Zj7SMvbEn5XeJC18jDWLqilE-JhM4A05AjQeh328g4/edit?usp=sharing