* Used SQL sequence instead of the db_sequence table.* Add CSS.* Add Search capabilities.* Add default (dynamic?) tree expansion.* Add XBel Export.* Add support for icons.* Add modified time.* Add access/check time.* Add user session support.* Better unicode handling.* Selection based bookmark manipulation.* More user preferences.* Clean up of all the code. This is a real mess currently!* Optimization of some code part.