Merge branch 'iface_utf8mb4' into 'master'

Interface UTF-8 4-Byte database

See merge request ispconfig/ispconfig3!667

Author: Marius Burkard

interface/web/sites/form/database.tform.php

@@ -157,7 +157,7 @@
 			'datatype' => 'VARCHAR',
 			'formtype' => 'SELECT',
 			'default' => '',
-			'value'  => array('' => 'DB-Default', 'latin1' => 'Latin 1', 'utf8' => 'UTF-8')
+			'value'  => array('' => 'DB-Default', 'latin1' => 'Latin 1', 'utf8' => 'UTF-8', 'utf8mb4' => 'UTF-8 4-Byte')
 		),
 		'remote_access' => array (
 			'datatype' => 'VARCHAR',