Use extension registration for MediaWiki credits

and renamed LICENCE file to COPYING

also fixes broken license link on Special:Version

Author: aude

LICENCE renamed to COPYING

@@ -1,9 +1,8 @@
 <?php
 
-define( 'WIKIBASE_DATAMODEL_JAVASCRIPT_VERSION', '2.0.0' );
+if ( defined( 'MEDIAWIKI' ) && function_exists( 'wfLoadExtension' ) ) {
+	wfLoadExtension( 'WikibaseDataModelJavaScript', __DIR__ . '/mediawiki-extension.json' );
 
-if ( defined( 'MEDIAWIKI' ) ) {
-	call_user_func( function() {
-		require_once __DIR__ . '/init.mw.php';
-	} );
+	include 'resources.php';
+	include 'resources.test.php';
 }

init.mw.php

@@ -0,0 +1,12 @@
+{
+	"name": "Wikibase DataModel JavaScript",
+	"author": [
+		"[http://www.snater.com H. Snater]"
+	],
+	"url": "https://github.com/wmde/WikibaseDataModelJavascript",
+	"description": "Javascript implementation of the Wikibase data model",
+	"version": "2.0.0",
+	"type": "wikibase",
+	"license-name": "GPL-2.0+",
+	"manifest_version": 1
+}