Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  b67f323dd4a8bf9d56eb820a76fe76c0e905275c

Specify phpunit version 3.7 for travis

As work around for the fact that  MediaWiki does not yet
support phpunit 4.0. (see bug: 58881)

@todo make it so MediaWiki *does* support phpunit 4.0.

Change-Id: Iff584904a5afe12092d0abea9ae8f03b5cbb49d6