Update Smarty to v2.6.31 (fix compatibility with PHP 7.2)

onyx2/modules/templates/smarty/plugins/modifier.nom.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+
+/**
+ * Smarty plugin
+ *
+ * Type:     modifier<br>
+ * Name:     separenombre<br>
+ * Date:     Aug 22, 2008
+ * Purpose:  separe number
+ * Example:  {$text|separenombre}
+ * @version  1.0
+ * @author   Nemunaire <nemunaire at gmail dot com>
+ * @param string
+ * @return string
+ */
+function smarty_modifier_nom($string, $type)
+{
+	global ${$type};
+    return ${$type}[$string];
+}
+
+/* vim: set expandtab: */
+
+?>