schemas/vegbien.sql: Added referencetype enum, containing VegBank's values in reference.referencetype as well as values for bien_web.datasource.aggregatorOrPrimary and bien_web.dataSourceNormalized.isHerbarium,isAggregator
schemas/vegbien.sql: Added referencetype enum, containing VegBank's values in reference.referencetype as well as values for bien_web.datasource.aggregatorOrPrimary and bien_web.dataSourceNormalized.isHerbarium,isAggregator