vmm.cfg: dealt with the most overdue section/option renaming. Added new options. Details: old new ------------------------------------------------------------ domdir.mode -> domain.directory_mode domdir.delete -> domain.delete_directory domdir.base -> misc.base_dir domdir -> _section domdir deleted_ maildir.mode -> account.directory_mode maildir.diskusage -> account.disk_usage maildir.delete -> account.delete_directory misc.forcedel -> domain.force_del misc.passwdscheme -> misc.password_scheme misc.dovecotvers -> misc.dovecot_vers services.smtp -> account.smtp services.pop3 -> account.pop3 services.imap -> account.imap services.sieve -> account.sieve services -> _section services deleted_ _NEW_.random_password -> account.random_password _NEW_.password_len -> account.password_len _NEW_.auto_postmaster -> domain.auto_postmaster

- Aliases
    - avoid looping aliases

- Domain
    - optional limits for number of:
        + accounts
        + aliases
        + destinations/alias
        + alias domains