Move DataController into Frontend namespace.

assets/maps/data.php

@@ -1,6 +1,15 @@
 <?php
 
-use Netzmacht\Contao\Leaflet\Controller\DataController;
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2014 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+use Netzmacht\Contao\Leaflet\Frontend\DataController;
 
 define('TL_MODE', 'FE');
 require(dirname(dirname(dirname(dirname($_SERVER['SCRIPT_FILENAME'])))) . '/system/initialize.php');