Log Message:
Update to 0.55.

New in release 0.55:
- Hebrew, Russian, Serbian, Spanish translations
- Some other translations updated.
- Support for solid colored backgrounds in GNOME
- Made it work on XFCE4; there were problems with the popup menu
- The calendar can now be moved around by holding down the middle mouse button
- Fully compatible with the new Python 2.3

ok'ed by drochner@