Updated mediawiki/extensions
Project: mediawiki/extensions/Spreadsheet  03a56e54016953f7b0208a6adeab3b558896aade

Migrate to JSON i18n

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

Change-Id: I607ba027de201f3442458fb75df58bf9aaf263e2