Log Message:
Update to 2.2.1.
Main changes since 2.0:
Add various translations
Add a preference to allow maintenance ops with no confirmation screen
Allow setting the number of columns in the summary screen as a user
      preference (Brian Keifer <brian@valinor.net>).
Make text, icon, or both menus a user preference
Add a Horde preferences screen, and a preference to refresh the summary
      screen.
Add text/enriched MIME_Viewer

See share/doc/horde/CHANGES for details.