Merge pull request #49 from WoltLab/vb5

vBulletin 5 Updates

diff --cc files/lib/system/exporter/VB5xExporter.class.php
index a35b3678ac3922e853d2c1ee4715c35c2c3565b4,df34f841f665aa72368728f918032f692186e53f..99d41d4dd18a4563a882b31e30206e62e98369a4
--- 1/files/lib/system/exporter/VB5xExporter.class.php
--- 2/files/lib/system/exporter/VB5xExporter.class.php
+++ b/files/lib/system/exporter/VB5xExporter.class.php
@@@ -22,9 -24,13 +24,11 @@@ use wcf\util\UserUtil
   * @author    Tim Duesterhus
   * @copyright 2001-2019 WoltLab GmbH
   * @license   GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 - * @package   com.woltlab.wcf.exporter
 - * @subpackage        system.exporter
 - * @category  Community Framework
 + * @package   WoltLabSuite\Core\System\Exporter
   */
  class VB5xExporter extends AbstractExporter {
+       const CHANNELOPTIONS_CANCONTAINTHREADS = 4;
+       
        const ATTACHFILE_DATABASE = 0;
        const ATTACHFILE_FILESYSTEM = 1;
        const ATTACHFILE_FILESYSTEM_SUBFOLDER = 2;