Show with each entity (media, paylist) where it is used

When managing the youdeck setup with multiple people it becomes hard to keep track of which contents are used where (and thus find deletable content). I would like each element to point to it's using entities. E.g. I can see in a PDF that it is used in three playlists and that it is shown on one monitor exclusively. Or for a playlist I would see if it is actually being used on some monitor at the moment. This way I can figure out if things are completely stale (and hence also safe to delete) or not.