- Added warning in the interface when a path for a shelluser is set that is outside of the website docroot.
- Added security settings feature to allow the root user of a server to control most aspects of whet the admin user of the controlpanel is allowed to do in system settings. This is especially useful for managed severs where the ispconfig admin user and the root user of the server are different persons.

Fixed/Implemented: replaced intval() by $app->functions->intval() in all interface functions due to big number problem in intval()

php 5.4 fixes + bugfix interface/web/admin/list/remote_user.list.php ['table_idx'] from userid to remote_userid

- fix indentation
- get it nearer than similar server/lib/ files

- Updated the user and database prefixes to use this storage.