More new Textures, Clean up a bit
Merge remote-tracking branch 'minetest_next/master'

Conflicts:
	mods/default/crafting.lua
	mods/default/textures/default_apple.png
	mods/default/textures/default_bookshelf.png
	mods/default/textures/default_brick.png
	mods/default/textures/default_cobble.png
	mods/default/textures/default_gold_block.png
	mods/default/textures/default_gold_ingot.png
	mods/default/textures/default_gravel.png
	mods/default/textures/default_jungletree.png
	mods/default/textures/default_jungletree_top.png
	mods/default/textures/default_junglewood.png
	mods/default/textures/default_mossycobble.png
	mods/default/textures/default_papyrus.png
	mods/default/textures/default_sand.png
	mods/default/textures/default_sandstone.png
	mods/default/textures/default_sandstone_brick.png
	mods/default/textures/default_scorched_stuff.png
	mods/default/textures/default_steel_block.png
	mods/default/textures/treeprop.png