Added a step to setup to get a password for the admin user.

Added a step to setup to get a password for the admin user.
Now when setup is run after it starts the server it will attempt to
create the admin user and set its password. This makes things a little
more obvious for new users setting up a Citadel system for the first
time.
Also it has the added effect of closing the small security hole.
On a new installation setup will grab user 1 before anyone else can thus
ensuring user 1 priviledges and/or it will set the password and user for
whoever the system admin is set to thus preventing the unlikely
situation where some attacker gets there first.