Move the bulk (or guts) of newuser and newproject from the web

interface to the backend. There are new scripts that can be called
from the command line:

	newuser xmlfile
	newproj xmlfile

They both run from small xmlfiles that are generated by the web
interface from the form data. I also moved user verification to the
backend so that we do not have duplicated email functions, but that
was a small change.

Upon error, the xmlfile is saved and sent to tbops so that we can
rerun the command by hand, rather then force user to fill out form
again. I also do a better job of putting the form back up intact when
there are internal errors.

If the user provides an initial public key, that is put into the xml
file as well and addpubkey is called from newuser instead of the web
interface. A more general change to addpukey is that it is now
*always* called as "nobody". This script was a morass of confusion
cause of having to call it as nobody before the user actually
exists. In fact, another of my ongoing projects is to reduce the
number of scripts called as a particular user, but thats a story for
another day. Anyway, the script is always called as nobody, but we
pass along the implied user in the environment so that it can do
permission checks.