- hoshi Bilder fuer weisse und schwarze Steine erstellen
- remove temporarily created files ;>
- what happens if a game is finished?
- add a description field for a goban table
- add a date-of-creation-creation field and a last-changed-field to goban table
- display game list more nicely with players and last change.
- delete user if inactive for n months
- add a preferences page with a modify password and delete account button
- modify psql.add_webgo_user to check if user already exists