Added checkAdmin function which also checks if a user is a member of the 'admin' group.



git-svn-id: https://svn.muze.nl/svn/ariadne-php5/trunk@6151 7882d7ee-46e0-0310-a255-a28a61b628e4
Checkadmin instead of user->data->login



git-svn-id: https://svn.muze.nl/svn/ariadne-php5/trunk@6152 7882d7ee-46e0-0310-a255-a28a61b628e4