Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  13b8cec4d4b2558052635dd8eb3debdcfbbe4285

QA: Updated Ruby gems

The latest version of mediawiki_selenium Ruby gem fixes a problem with
creating pages via API.

Change-Id: I75c612a4cffdbf14f2cb5f57d351d108fe023afb