Add header comment; PSR-2 fixes; remove seeders

framework/core/locale/en.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 return [
     'plural' => function ($count) {
         return $count == 1 ? 'one' : 'other';