Added PHP 7 check in installer and updater.

Till Brehm

2016-04-22 ebd0e986ed11f2a34fb58cdd33efbfab192083ad

 interface/web/sites/lib/lang/ar_shell_user.lng

@@ -1,6 +1,6 @@
<?php
$wb['shell_txt'] = 'Shell';
$wb['dir_txt'] = 'Dir';
$wb['dir_txt'] = 'Base Dir';
$wb['server_id_txt'] = 'Server';
$wb['parent_domain_id_txt'] = 'Site';
$wb['username_txt'] = 'Username';