Updated mediawiki/extensions
Project: mediawiki/extensions/Poem  6a22432bf5d756aad97a9474914269fb8fa7d713

Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: I4213233604f23c8557f26965ffc6dc14cc4c040a