VMM/Alias.py: Replaced some %r with '%s'.
VMM/AliasDomain.py: save(), switch(), delete(): Update AliasDomain._gid after
database change. Added dbc.close() to AliasDomain.delete().
create_tables{,-dovecot-1.2.x}.pgsql: Fixed a typo.
-- ----- with Dovecot v1.2.x the service managesieve was renamed to sieve-- ---ALTER TABLE users RENAME managesieve TO sieve;DROP VIEW dovecot_password;CREATE OR REPLACE VIEW dovecot_password AS SELECT local_part || '@' || domain_name.domainname AS "user", passwd AS "password", smtp, pop3, imap, sieve FROM users LEFT JOIN domain_name USING (gid);