Split I18N stuff into its own submod.

homedecor/handlers/furnaces.lua

@@ -1,6 +1,6 @@
 -- This code supplies an oven/stove. Basically it's just a copy of the default furnace with different textures.
 
-local S = homedecor.gettext
+local S = homedecor_i18n.gettext
 
 local function swap_node(pos, name)
 	local node = minetest.get_node(pos)

homedecor/handlers/inventory.lua

@@ -1,4 +1,5 @@
-local S = homedecor.gettext
+
+local S = homedecor_i18n.gettext
 
 local default_can_dig = function(pos,player)
 	local meta = minetest.get_meta(pos)