Updated mediawiki/extensions
Project: mediawiki/extensions/PHPExcel  eaa5bdfe18c8e528a664c115b760d771c45c260d

Migrate to JSON i18n

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

Change-Id: I47e3fc5d274c9632d071d0c4e13df111f0042b17