Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  92882c7c5f8b9eb4a2697a1651a8a3d1248d3921

Regression: Fix editor preview

Deal with the case when a Section does not get children passed in.

Change-Id: I8f430eba207bb4b34b287ff47cb54e039b79437b