What does this mr do?

Before, refreshing the request table page caused a resubmit of filters if filters were last submitted.

Actions taken to fix bug

By redirecting to the request table page after submitting filters instead, the final request cannot be a POST.

Does this MR meet the acceptance criteria?

I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
A test was created to test the bug.
I have updated the documentation accordingly.
I adhere to the style guide.

Closes #101 (closed)