Add controlled vocab classes

- add :institutions to organization.rb
- new class for localcoll predicate oregon:localCollection
- new class for culture predicate vra:culture
- new class for people predicate oregon:people
- new class for :sciclass predicate dwc:class
- new class for :scicommon predicate dwc:commonName
- new class for :scigenus predicate dwc:genus
- new class for :sciphylum predicate dwc:phylum
- new class for :styleperiod predicate vra:stylePeriod
- new class for workType prediate vra:workType
Fix work type alias

"workType" generates a file that seems to confuse ruby or maybe just
our vocab loader...?
Rename ethnog QA interface