Improve behavior of deleting all items from a management table

[themeblvd]

Currently, when a management table (i.e. users or content of a specific type) is empty, there's a nice little message saying that no content has been created, instead of showing an empty table.

However, when presented with a table of items, if you delete them all, you see the blank table. After deleting the last item, this should ideally re-render the table to display that nicely formatted message the user would now see if they navigated away and came back (or refreshed the route).