Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  3b97bee93e185c9d6fb8f6700b098a35c2f31ac0

Hygiene: Rewrite things as Overlaynew

Make UploadTutorial an OverlayNew
ContentOverlay as child of OverlayNew
Kill LoadingOverlay
Remove use of dead code in nearby.less for .message - this
is not used anywhere from the look of it (looks like it
was previously used by PagePreviewOverlay which already
uses new overlay code so this rule doesn't apply)

This begins deprecation of the old Overlay class.

Change-Id: Icfdbdfde4ee831261d57013b4b790400d7426044