Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  f500f28b87cc3e85ff85f51cb47899c84d9653d1

Rename the horrible overlay class to something more meaningful

Rename badly named mf-navigation.js file
Update README
Consistent name to navigation-enabled

Change-Id: I2d89d756f1756c15b62418e4cb88ffeb537808b8