VMM/handler: Updated Handler.user_{disable,enable} methods to
accept a list of services.
man/{,de/}man1/vmm.1.rst: Updated userenable/userdisable part.
# All parameters are described in pgsql_table(5) / PGSQL PARAMETERS## The hosts that Postfix will try to connect to and query from.hosts=localhost# The user name and password to log into the pgsql server.user=postfixpassword=some_password# The database name on the servers.dbname=mailsys# The SQL query template used to search the databasequery=SELECTmaildirFROMpostfix_maildirWHEREaddress='%s'