browser: refactor level handling code

- remove insert-track-function, it's not needed
- playlist indentation is now handled the same way as the browser,
  using format strings
- dynamically bind the relative level to make the above work
- indent tracks a little more to make them visibly "under" albums

darcs-hash:20060705114748-4e3e3-362beab720e68610925c927e0f4638f43f1fad1a.gz

0 files changed, 0 insertions, 0 deletions