Syncronize VisualEditor: 83404c4..2c691ff

Change-Id: Ifda51f85ec3a0fb93d085b7940f665de0c2622de
Updated mediawiki/extensions
Project: mediawiki/extensions/ZeroRatedMobileAccess  16dd148fa42104546aeee1bcf7537ea47ac34e3b

The first Selenium test: banners

Bug: 48218
Change-Id: I04911d4d4553abcc4103e7d7fbb9794817a6e420