Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  e261f496f75bc84b004dbea3524b9282596feada

Memoize results of the browser.js methods.

Some browser detection methods are a bit involved (they create dom nodes and
do several things) to be calling them several times on page load. By caching
the results they will be calculated just once.

The isWideScreen method is not cached because the width of the browser may
change in desktop versions.

Change-Id: I0b8a863095fdcc84956b3e711baecf5936b99506