Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  4a459e40a8ab6f9c8e8b6f659a8bab51c5deeb60

Remove surface dependencies from lookup widget

Objective:
* Use <body> instead of the closest surface overlay as the default
  overlay (wasn't actually being used anyway)
* Use this.$.offsetParent instead of closest surface when measuring
  parent frame offset to position text input menu

Change-Id: I04fc5ff1da4bafd342093922a5bd3b3a784b327c