puzzle.keylock: Move the description to a comment

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
playground: Pull in more goodies

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
playground.puzzle.db: New playground

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>