with script to delete a user, either from a single project or from
the entire testbed. All of the DB stuff is done in the script; the web
interface no longer does anything but error checks. This is because
removing a user requires some finess in when things are removed, and
if there are any failures I wanted to make sure that the script could
be rerun on a user, without barfing. Generally though, this is part of
my trend to moving DB work from the web interface into the backend.