Teacher can still see pick request button after request has been taken.

Summary

You can see in this image that the request has clearly been taken but the 'claim request' button in the top right is still visible. This should not be the case.

Steps to reproduce

1. Take a request normally as a teacher
2. See the button still there
3. Extra: if you press the button, you will see it results in access denied.

Possible Fix

Add th:if to thymeleaf template for conditional rendering.