Added back craft recipe to get sand from gravel

minetestforfun_game/mods/default/crafting.lua

@@ -548,6 +548,13 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = "default:sand",
+	recipe = {
+		{"default:gravel"},
+	}
+})
+
 minetest.register_craft({
 	type = "cooking",
 	output = "default:stone",