Add any missing content for Desert Caves.

[Delocuro]

Can't get my workspace to work, so I don't know what all has been added yet, but the basic features we need for it to be done-enough are...
-Dark Sand
-Quicksand
-Pressurized Sandstone
-Pressurized Sandstone Decor Blocks (Raw, Raw Slabs, Raw Stairs, Refined, and Chiseled should be added by EC without Minestrapp installed).
-Eroded Ore
-Drought Gold Ore
-Ancient Hieroglyphs and their variants
-Dry Crystals
-Dry Shards
-Dry Gems
-Dry Tools and Armor
-Poisonous Cactus
-Dark Red Dye
-Dark Red Wool, Stained Glass, Stained Glass Panes, Hardened Clay, Leather Armor, and Sheep

Not all of these are added to the features list yet, so if you have questions about any, let me know.