Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  e47d7d6c8919635bcc258a6a6e379f9ab8f4f4ab

Re-introduce siteGroup setting for performance reasons

This eliminates the need for memcached / SiteSQLStore lookup,
if the siteGroup setting is specified, which may be desired
for performance reasons.

The setting is optional and can fallback to doing a lookup.

Bug: 56602
Change-Id: I9d52070a442140846e448860ec3d04385ec8c471