Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  a54ef7e31bea225f9a67c001da367bf70c048b2e

Use dispatching for exception localizing

allows repo-specific stuff to stay in repo and
the localizer to be more flexible.

Change-Id: I29c47c71a1af2e9f634c97003825f7c55a3df56d