add ugx mod

worldmods/ugx/init.lua

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+-- Temporarily prevent lava griefing until proper code can be written.
+minetest.register_abm({
+	nodenames = {"default:lava_source"},
+	interval = 1,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		if pos.y >= 0 then
+			minetest.remove_node(pos)
+		end
+	end
+})

worldmods/ugx/readme.md

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+###UGX Realms
+
+Custom server tweaks.