% for tab in CourseTabList.iterate_displayable(course, settings, user.is_authenticated(), has_access(user, course, 'staff'), include_instructor_tab=True):
% for tab in CourseTabList.iterate_displayable(course, settings, user.is_authenticated(), has_access(user, course, 'staff'), not UserProfile.has_registered(user), include_instructor_tab=True):