Distant Horizons - Au Naturel Edit

- Attempted to implement as per nightly fix mentioned in distant horizons discord regarding mapping data/redundancy fix for differently detailed lod levels.  The fix mainly improves the loading/storage of low-detail level lods, so there's not usually a huge discernable improvement for our version, as we load highest detail first, not lowest level first.  Will get some minor storage and database benefits, as well as loading benefits on those lods which are at lower levels, but it's liable to be minor overall in our version.