#65 Passwordisms

[Adam Kennedy]

Currently, the password admin option is handled quite
crudely.

After setting or changing the admin password, the admin
password cookie is not immediately set of changed, and
if an exist password is set, we don't check
old/new/confirm before changing it.

1. Change the password stuff to new/confirm if no
password, of current/new/confirm if a password is
already set.

2. Once 1. is done, automatically send a new password
cookie after setting the password, so the admin does
not get asked again for their password.