Updated mediawiki/extensions
Project: mediawiki/extensions/TranslateSvg  038a980c09b72d2389214250a2ab952e0e7581c7

Use and test SVGMessageGroup::register

Code added in previous commit I7842792 but was previously
unused pending implementation of proper unit tests.

Change-Id: Iac01b0899c09d07950b400076f2ce6f18dfbd09d