Log Message:
Update to 2.1.4, provided by Min Sik Kim in PR pkg/24083.

Changes:

    - Close some cross-site scripting vulnerabilities in the admin pages
      (CAN-2003-0965).
    - New languages: Catalan, Croatian, Romanian, Slovenian.
    - New mm_cfg.py/Defaults.py variable PUBLIC_MBOX which allows the site
      administrator to disable public access to all the raw list mbox files
      (this is not a per-list configuration).
    - Expanded header filter rules under Privacy -> Spam Filters.  Now you can
      specify regular expression matches against any header, with specific
      actions tied to those matches.
    - Rework the SMTP error handling in SMTPDirect.py to avoid scoring bounces
      for all recipients when a permanent error code is returned by the mail
      server (e.g. because of content restrictions).
    - Promoted SYNC_AFTER_WRITE to a Default.py/mm_cfg.py variable and
      make it control syncing on the config.pck file.  Also, we always flush
      and sync message files.
    - Reduce archive bloat by not storing the HTML body of Article objects in
      the Pipermail database.  A new script bin/rb-archfix was added to clean
      up older archives.
    - Proper RFC quoting for List-ID descriptions.
    - PKGDIR can be passed to the make command in order to specify a different
      directory to unpack the distutils packages in misc.  (SF bug 784700).
    - Improved logging of the origin of subscription requests.
    - Misc bugfixes.