Removing permissions quiz/grading:viewidnumber and quiz/grading:viewstudentnames is not enough to make quiz anonymous.

• Student names and photos are still visible in Results/Grades and Results/Responses

(Note: To make the names/photos not visible anywhere, we also removed permission mod/quiz:viewreports. But then attached files in essay questions are no longer downloadable, rendering the message Sorry, the requested file could not be found)