PROV-1070 In the process of getting rid of all local static cache variables in Datamodel in favor of MemoryCache
PROV-1070 Reworked Caching in Datamodel to use new facilities
PROV-1070 Misc changes
PROV-1070 Replace on-disk caching in SearchIndexer with ExternalCache
PROV-1070 Rework in-memory translation caching