Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  2f270d9f1651d789d1c4db335475b846990f0e04

Add missing documentation

Add missing documentation for:
Overlay.js
Page.js
PageApi.js
Panel.js
modes.js

Change-Id: I61900a88fdab81e1923fe0e1f97000b607f08095