Add separate login to account creation queries

This is first working version of an added login query to the account
creation process. It fixes the first part of #6, but there still needs
to be more testing for the second part of that issue, which concerns
creating accounts with domains not listed in domain.csv.

autoconf/offlineimap_profile

@@ -5,7 +5,7 @@ remoterepository = $title-remote
 
 [Repository $title-remote]
 type = $type
-remoteuser = $fulladdr
+remoteuser = $login
 sslcacerfile = /etc/ssl/cets/ca-certificates.crt
 remotepasseval = mailpasswd("$title")
 remotehost = $imap