Updated MinetestForFun Game

- Moved farming and screwdriver into MinetestForFun Game
 - Updated files (mostly `is_ground_content`)
 - Removed weird partial copy of jukebox in MinetestForFun Game

minetestforfun_game/mods/farming/sugar.lua

@@ -0,0 +1,15 @@
+
+--= Sugar
+
+minetest.register_craftitem("farming:sugar", {
+	description = "Sugar",
+	inventory_image = "farming_sugar.png",
+})
+
+minetest.register_craft({
+	type = "cooking",
+	cooktime = 3,
+	output = "farming:sugar 2",
+	recipe = "default:papyrus",
+})
+