Added PHP 7 check in installer and updater.

Till Brehm

2016-04-22 ebd0e986ed11f2a34fb58cdd33efbfab192083ad

 interface/web/admin/lib/lang/cz_language_add.lng

@@ -7,3 +7,4 @@
$wb['btn_cancel_txt'] = 'Zpět';
?>