[pipeworks] Update and fix global variable 'rules'

- Fix global variable 'rules' in devices.lua for #508
 - Update inventory elements from pipeworks' upstream repository

mods/pipeworks/autocrafter.lua

@@ -183,7 +183,14 @@ local function update_meta(meta, enabled)
 			default.gui_bg_img..
 			default.gui_slots..
 			default.get_hotbar_bg(0,7) ..
-			"list[current_player;main;0,7;8,4;]")
+			"list[current_player;main;0,7;8,4;]" ..
+			"listring[current_player;main]"..
+			"listring[context;src]" ..
+			"listring[context;dst]" ..
+			"listring[current_player;main]"..
+			"listring[context;recipe]" ..
+			"listring[context;output]"
+			)
 
 	-- toggling the button doesn't quite call for running a recipe change check
 	-- so instead we run a minimal version for infotext setting only

mods/pipeworks/devices.lua

@@ -35,6 +35,8 @@ local pipes_devicelist = {
 	"storage_tank_10"
 }
 
+local rules = pipeworks.mesecons_rules -- Enough with the undefined global variable // MFF (Mg|01/07/2016 for #68)
+
 -- Now define the nodes.
 
 local states = { "on", "off" }

mods/pipeworks/filter-injector.lua

@@ -45,7 +45,8 @@ local function set_filter_formspec(data, meta)
 				 "Sequence slots Randomly",
 				 "Sequence slots by Rotation"})..
 			exmatch_button..
-			"list[current_player;main;0,4.5;8,4;]"
+			"list[current_player;main;0,4.5;8,4;]" ..
+			"listring[]"
 	end
 	meta:set_string("formspec", formspec)
 end