Cleanup LinksByKey interface
- make
linkIDandaddReferenceprivate, as those are now only for internal use. Uselinkinstead. - remove
LinkerWithKeycompletely. UseLinksByKey::fetchFromOrCreateOnTESinstead (but prefer to not use it at all if possible)
must be merged together with Lbcom!649 (merged), Rec!3267 (merged), Allen!1099 (merged), MooreAnalysis!103 (merged)
Edited by Gerhard Raven