Updated mediawiki/extensions
Project: mediawiki/extensions/Thanks  615ec96adfa4cdb8d62a7795e774ac82f8c67cf3

Quote 'class' in JS object literals

It's a reserved word, old IEs see this and bail. (Conforming browsers
correctly see it's an object key and parse the literal.)

Reported on the English Wikipedia's WP:VPT.

Change-Id: I7a032afc6d62d09a5ec32c7c8d0af5611665ea59