Stop adding duplicate "missing term" errors at point of retrieving client search results (in TermSearchable) and later processing those results (in TermHandler)
Ensure equivalence of interface (duck typing) for RefName and UnknownTerm classes
Dev: clean up old comments/commented out code; run tests in deterministic random order (i.e. with reported seed); aggregate failures in tests globally via config
TermSearchable) and later processing those results (inTermHandler)RefNameandUnknownTermclasses