Do not enclose \core_grades_renderer::user_heading() in
$OUTPUT->heading() and enclose the user's name in the user heading in
<h2> tags instead.
- Having <div> inside <h2> results in errors in HTML validation.
- Enclosing the whole user heading in <h2> results in the other
elements in the user heading (Message, Add to contacts) to be announced
to screen readers which can result in confusion.
e3633dc719