Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  58230f2c5b5b5bfb30b4aa0bd244e417e3cc1a0c

Hygiene: Make more info dialog reusable

* Switch to /wikigrok/about more generic url
* Update links
* Do event logging by binding to the link click
* Update documentation in OverlayManager

Change-Id: I8a8b8b6645be4649deefe97bc901b47ef6d90bdb