lib/lingo/database/source/multi_{key,value}.rb (set): Always generate complete entries. (fb83169)

lib/lingo/language/lexical_hash.rb: No longer access database configuration at runtime.
lib/lingo/database.rb ([]): Dropped IDX_REF.

test/attendee/ts_synonymer.rb: Synonymer doesn't support +check+ option, Variator does.