Add 'SHA' (currently unused) to new collections.
Add 'SHA' (currently unused) to new collections.

This is not currently used, but is a likely addition. Our server-side
validation already looks for this field (empty string is OK).

OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree