Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  385606d6fed5485b8c87dc54a61ff9f0021f4ec0

Added new icons

Icons needed for upcoming generated content editor.

* Parameter (big and small)
* Parameter Set
* Source (big and small)
* Template (big and small)

Change-Id: I9c5df7970e3f0991ac6a66590212f40d83af9c0a