Wikibase/Schema

Wikibase Repo and Lib extensions use several new tables:


 * Wikibase/Schema/wb entity per page
 * Wikibase/Schema/wb id counters
 * Wikibase/Schema/wb items per site
 * Wikibase/Schema/wb terms

Optional in the repo database or could be a separate database are tables to hold changes data:


 * Wikibase/Schema/wb changes
 * Wikibase/Schema/wb changes dispatch