Use the official screenshot scene so that screenshots can be
maintained, and to make texturepacks easier to compare.
Remove the "branding", since this is no longer exclusively
Auri's work (and Auri is relatively uninvolved in the ongoing
maintenance), and to simplify the process of updating the
screenshots in the future as textures continue to evolve and
contributions are merged.
- The old player hand wieldmesh is no longer used, it's now
a full textured mesh based on the player skin; change the
player skin textures to change the result.
- The hotbar is no longer pre-baked, but built dynamically based
on status changes; all new textures need to be designed,
including ones representing status changes.
- The "progress" thing is out of date (Arekusei has done some
things like sponges and parts of nc_fire) and it's apparent
that Auri is no longer actually intending to continue this.
- Allow cobble-containing nodes to show the inner substance through
the cracks between stones.
- Fix grass side texture, broken with 2020-02-18 upstream texturing
changes.
