Issue #937: Reflect conflicting_ids field of identity_record
Issue #937: Move needs_further_review enum value up so that the record
is not returned when polled for.
Issue #937: Normalize names before uniqueness checking them

It's possible that different verifier humans might type names in
slightly differently (different punctuation, capitalization, etc) and
thus cause a uniqueness constraint to pass that ought to fail. Try to
alleviate this by making the names somewhat uniform (no non-alphabetical
characters, all uppercase)