clients: Implement directory listing for sync

www/files/index.php

@@ -32,7 +32,7 @@ global $getVers;
 $getProd = null;
 $getVers = null;
 $info = explode('/', $_SERVER['PATH_INFO']);
-if (sizeof($info) > 0 && ($info[1] === 'elwig' || $info[1] === 'winziprint')) {
+if (sizeof($info) > 1 && ($info[1] === 'elwig' || $info[1] === 'winziprint')) {
     $getProd = $info[1];
     $getVers = $info[2];
     if (sizeof($info) > 3) {