Roles and permissions

Hi Ne, I don't think showing just users with the "Student" role in the participants list is quite what everyone wants. For example I do want teachers to show as well. An extra permission "Show as participant" will give every admin the possibility to set up the participants list the way they need.

I also think that the participants list and the role assignment pages are two very different things. The role assignment pages should show all users with a particular role and should be optimised for the task of managing roles. The participants list should be optimised to create a sense of community among course participants.