[MIRROR] Refactor of modular PC UIs (#874)

* Refactor of modular PC UIs

* .rej fix

code/modules/modular_computers/file_system/programs/ntnrc_client.dm

@@ -1,6 +1,6 @@
 /datum/computer_file/program/chatclient
 	filename = "ntnrc_client"
-	filedesc = "NTNet Relay Chat Client"
+	filedesc = "Chat Client"
 	program_icon_state = "command"
 	extended_desc = "This program allows communication over NTNRC network"
 	size = 8
@@ -9,6 +9,8 @@
 	network_destination = "NTNRC server"
 	ui_header = "ntnrc_idle.gif"
 	available_on_ntnet = 1
+	tgui_id = "ntos_net_chat"
+
 	var/last_message = null				// Used to generate the toolbar icon
 	var/username
 	var/datum/ntnet_conversation/channel = null
@@ -180,21 +182,6 @@
 		channel = null
 	..()
 
-/datum/computer_file/program/chatclient/ui_interact(mob/user, ui_key = "main", datum/tgui/ui = null, force_open = 0, datum/tgui/master_ui = null, datum/ui_state/state = GLOB.default_state)
-
-	ui = SStgui.try_update_ui(user, src, ui_key, ui, force_open)
-	if (!ui)
-
-
-		var/datum/asset/assets = get_asset_datum(/datum/asset/simple/headers)
-		assets.send(user)
-
-
-		ui = new(user, src, ui_key, "ntnet_chat", "NTNet Relay Chat Client", 575, 700, state = state)
-		ui.open()
-		ui.set_autoupdate(state = 1)
-
-
 /datum/computer_file/program/chatclient/ui_data(mob/user)
 	if(!GLOB.ntnet_global || !GLOB.ntnet_global.chat_channels)
 		return