Course role status

[Daníel Sigurgeirsson]

There should be an API which accepts a courseInstanceID, and returns information about the role of the currently logged in user in the given course. The exact details will probably change later, but it should support at least the following responses:

• student
• teacher
• employee

It is highly likely that new roles will be added: read-only teacher, different levels for employees as well, etc. However, in the first version, this will suffice.