Channel Visibility Configuration mode to NOT add new channels and fix ordering and racks

Every time a new track is added it shows up in every visibility setting.
I use 14 different settings, and having to manually remove every single new track from every setting is infuriating. Makes the whole thing unusable.

Also the order in the selector does not match the track order, so the frustration is compounded.

Also the rack select setting is broken and doesn’t save.