This is a preparatory commit for using isort for sorting all of our
imports, merging changes to files where we can easily review the
changes as something we're happy with.
These are also files with relatively little active development, which
means we don't expect much merge conflict risk from these changes.
Useful for the upcoming check_realmauditlog_by_user_query, if nothing else.
But I suspect it will indeed get use; looking for events around or within a
certain time is pretty natural for an audit log.
The main argument against I would say is that this should actually be a
joint index with something else. I'm not sure what that something else
should be, so just optimizing for what I think
check_realmauditlog_by_user_query will need for now.