UCJEPS-346, UCJEPS-356: Add remaining ISO-3166 countries to fieldLocCoun...

...try; remove 'Seaweeds' from taxonMajorGroup options.

Ray,

This ought to be my last set of changes to code before the v3.2.1 upgrade. Please merge.

There are no existing data changes necessitated by this commit. Lam will be loading values against taxonMajorGroup.

Thanks,
Rick