Update version date.

Change-Id: I9d189c8e0b37fee21230ea94ca3f9443e4d6958f

UniversalLanguageSelector.php

@@ -25,7 +25,7 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 /**
  * Version number used in extension credits and in other placed where needed.
  */
-define( 'ULS_VERSION', '2013-11-27' );
+define( 'ULS_VERSION', '2013-12-31' );
 
 $wgExtensionCredits['other'][] = array(
 	'path' => __FILE__,