Updated mediawiki/extensions
Project: mediawiki/extensions/TimezoneSelector  c0954f0c7626e8f85932eb52377a2e8514791bed

Some consistency tweaks in preparation for adding extension to translatewiki.net

* Fix type of extenson credits ('skin' is not defined)
* Remove translations which are identical to source
** The message keys will be set to 'optional'
* Kill trailing spaces

Change-Id: Ib425e34eab0e3aadd33645e66708b7c01864a520