Updated mediawiki/extensions
Project: mediawiki/extensions/MediaWikiChat  e8d83685c29eb7858df6275a569067548af5826c

When a user is blocked, ban them from chat.

Suggested by Krusher

Also some changes for JSlint

Change-Id: I76e84cdb29bbc8645e701776b9c89d8a4949fd75