Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  54812781faabbff8a6e0f580dc516e10c4dbcd50

Story 883: Remove previous and next buttons from editor

Also solves bug 50301 since we never try to load more than one section
per editor overlay.

Bug: 50301
Change-Id: I15522e6e52dfef505f1d6322ceacc9eca33856c0