Steps to reproduce
==============

1. Got to Site administration / Users / Accounts / Browse list of users
2. Show advanced elements
3. Inspect roles selectable for the Course role select widget ("id_courserole_rl")

Expected result
===========

The select widget should allow to select roles defined in course context (teacher, editingteacher, student) and probably also roles defined in the context of an activity module.

Actual result
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Only roles defined in system context can be selected (manager, coursecreator).

The selectable roles are identical with the ones for the System role select widget ("id_courserole_rl") for which the roles defined in system context are fine.