[documentation] [Documentation task] doxygen for user_roles

[Bèr Kessels]

Issue status update for 
http://drupal.org/node/59763
Post a follow up: 
http://drupal.org/project/comments/add/59763

 Project:      Documentation
 Version:      <none>
 Component:    Developer Guide
 Category:     tasks
 Priority:     normal
 Assigned to:  Anonymous
 Reported by:  Bèr Kessels
 Updated by:   Bèr Kessels
 Status:       active

This patch adds doxygen info for that function.




Bèr Kessels