"Grid" was a really antiquated name when it had both the screen state
AND the renderering functionality tied together. This hasn't been true
for a LONG time and it is long overdue that this is renamed to its
proper name.
This also begins setting up a folder structure to anticipate future
renderers and rendering functionality. I'm not working on any alternate
renderers right now so the interface isn't expected to be good, just
laying out the files in this way.
