Allow local email address

[p10s]

In the account creation form, you can't enter a local email address like postmaster@localhost. I'm using MoinMoin for a personal (local) wiki which isn't accessible from outside my pc, so I prefer to use a local email address. I think this should be a configuration option.

[RogerHaase]

From the command window you can do:

moin account-create -n JaneDoe  -e postmaster@localhost -p A1B2C3D4