Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  a8e647b6f45313f26bf44a52ca25331aa979c6dd
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Refactor links and url code in skin (code cleanup)

Shift anything to do with links or urls to prepareTemplateLinks

In process discover unused properties that we can throw away \o/

Change-Id: I6535f83ccbb3fcf1a484d676e0e59c3e3b18cad8