Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  beac6249f5d6eeb0a15206c7e3b7e9e663121d3a

Make sections aware of their subsections

Introduce concept of child Sections
A Section has multiple child Sections
This will make it easier to build table of contents

Change-Id: If88596659b9bb0d2da86aa7a709ef186bb238030