Currently queries executed in the hooks don't run in the transaction
with the page deletion query and it's harder to write hook without
copying the whole view if you want to keep queries running in the hooks
integral with page deletion.
According to a google search I just did, it seems a lot of people have forgotten to add ``Disallow: /admin`` in their robots.txt (or forgot to add robots.txt) at all.
Adding this meta tag into the head of all admin pages should prevent any admin pages being indexed even if this was missed.
