adopt D7 formatter settings

In D6 we ran into issues because of theme registry sizes exploding when having many many presets.

In D7 now we support formatter settings which makes it totally unneeded to define N * N formatters in the theme registry.
One single formatter with two checkboxes is perfectly enough.

Modules like Colorbox perfectly show how to do this.
http://drupal.org/project/colorbox

Lightbox urgently needs to adopt this D7 feature to make it futureproof.
Since we're already in beta, we would need to provide an upgrade path correctly... (This will result in quite some mess... pity)
Without this feature, Lightbox is really limited in acceptance and considered unclean, even unusable for bigger projects.