nothing was materially using the non-snap-in cutout anymore (except for
the frame which wasn't updated since removing the bigger cutout
rectangle, so I fixed that), and I want to use it for a template thing
I'm working on, so remove some cruft
* frame width has been reduced in order to leave more space and have
sunken buttons somewhat accessible
* the cutout for neutrik mounts has been reduced and moved into the
holes themselves, to do this more modularly and restore some support