It is based on rlihm`s mock up (http://gagarin.suse.de/).

The basic concept is to show only the most important table entry on a top level (e.g. user name).
Therefore there are fewer elements on the screen which eases the use of the module and increases its self-descriptivness and its task orientation.
On a second level which the user accesses after clicking on the user name the user can choose whether to "edit" or "delete" the entry. Again it is avoided to show non-task related information.
Before deleting an item the user is prompted an "Are you sure?" pop up in order to increase error tolerance and prevent the user from unintended data loss.
"Edit" shows the settings of the list entry. If more settings are available they are organized in tabs.
The "Edit" dialog is left either via "Save" or "Cancel"
New list entries can be added via "Add New Item" button on top the list.