detect the ubuntu version based on /etc/os-release

Uwe Merbeth

2016-05-09 f5daecadf5846ff0b2d512e6a1a47f17342fe02b

 interface/web/admin/groups_edit.php

@@ -43,6 +43,7 @@

//* Check permissions for module
$app->auth->check_module_permissions('admin');
$app->auth->check_security_permissions('admin_allow_cpuser_group');

// Loading classes
$app->uses('tpl,tform,tform_actions');