Comment on forwarding request visisble to students

Summary

The comment placed upon forwarding a request is visible to students, but the placeholder text is "Leave a comment to explain your forward to other TAs."

Steps to reproduce

  1. Hit "forward"
  2. Add a comment that is supposed to be private
  3. Find out a student knows this information

Possible Fix

Make it only visible for TAs

Edited by Yoshi van den Akker