[Developer] Importing a keyboard from Windows produces non-optimal code

Marc wrote: yes, the code is not great after an import from WIndows. We could reduce clutter somewhat with stores but I think that's a bit of a mixed blessing. It would be great if we could represent deadkeys and caps/ncaps in the visual editor -- that would cover near 100% of windows keyboards.

Ron noted a bug in the Import Windows Keyboard relating to which targets are selected automatically. Would be good to explore that further.