Add a counter in "Manage display"

dylan donkersgoed → made their first commit to this issue’s fork.

This patch uses a {% spaceless %} tag which is no longer supported and can cause fatal errors. I've opened an MR with the patch applied and that fixed. Attached is a patch file. I've attached no interdiff as that's handled in the MR.

Attaching a version of the patch built for the current release as well.