Adds NTNet, more programs, improvements

- Overall improvements of code, fixes, etc.
- Adds NTNet and NTNet relays. They currently miss deconstruction/construction but that's planned for later.
- Adds few more programs (still preinstalled in the laptop, for debugging)
- Successfully gets rid of copypaste formerly needed in templates. Now the header is in default template itself. This seems to be least problematic solution without making change to nanoui's code itself.

code/modules/modular_computers/computers/modular_computer.dm

@@ -163,7 +163,11 @@
 	battery.maxcharge = 500
 	battery.charge = 500
 
+	hard_drive.stored_files.Add(new/datum/computer_file/program/alarm_monitor(src))
 	hard_drive.stored_files.Add(new/datum/computer_file/program/power_monitor(src))
+	hard_drive.stored_files.Add(new/datum/computer_file/program/atmos_control(src))
+	hard_drive.stored_files.Add(new/datum/computer_file/program/rcon_console(src))
+	hard_drive.stored_files.Add(new/datum/computer_file/program/suit_sensors(src))
 	update_icon()
 	..()
 
@@ -205,6 +209,7 @@
 	ui = nanomanager.try_update_ui(user, src, ui_key, ui, data, force_open)
 	if (!ui)
 		ui = new(user, src, ui_key, "laptop_mainscreen.tmpl", "NTOS Main Menu", 400, 500)
+		ui.auto_update_layout = 1
 		ui.set_initial_data(data)
 		ui.open()
 		ui.set_auto_update(1)
@@ -224,7 +229,11 @@
 		use_power = 0
 		return 0
 
-	handle_power() // Handles all laptop power interaction
+	if(active_program && active_program.requires_ntnet && !get_ntnet_status(active_program.requires_ntnet_feature)) // Active program requires NTNet to run but we've just lost connection. Crash.
+		kill_program(1)
+		visible_message("<span class='danger'>\The [src]'s screen briefly freezes and then shows \"NETWORK ERROR - NTNet connection lost. Please retry. If problem persists contact your system administrator.\" error.</span>")
+
+	handle_power() // Handles all computer power interaction
 
 // Function used by NanoUI's to obtain data for header. All relevant entries begin with "PC_"
 /obj/machinery/modular_computer/proc/get_header_data()
@@ -276,9 +285,9 @@
 	update_icon()
 
 // Returns 0 for No Signal, 1 for Low Signal and 2 for Good Signal. 3 is for wired connection (always-on)
-/obj/machinery/modular_computer/proc/get_ntnet_status()
+/obj/machinery/modular_computer/proc/get_ntnet_status(var/specific_action = 0)
 	if(network_card)
-		return network_card.get_signal()
+		return network_card.get_signal(specific_action)
 	else
 		return 0
 
@@ -291,6 +300,7 @@
 		kill_program(1)
 		visible_message("\The [src] shuts down.")
 		enabled = 0
+		update_icon()
 		return
 	if( href_list["PC_runprogram"] )
 		var/prog = href_list["PC_runprogram"]
@@ -300,8 +310,12 @@
 			P = hard_drive.find_file_by_name(prog)
 
 		if(!P || !istype(P)) // Program not found or it's not executable program.
+			user << "<span class='danger'>\The [src]'s screen shows \"I/O ERROR - Unable to run program\" warning.</span>"
 			return
 
+		if(P.requires_ntnet && !get_ntnet_status(P.requires_ntnet_feature)) // The program requires NTNet connection, but we are not connected to NTNet.
+			user << "<span class='danger'>\The [src]'s screen shows \"NETWORK ERROR - Unable to connect to NTNet. Please retry. If problem persists contact your system administrator.\" warning.</span>"
+			return
 		if(P.run_program(user))
 			active_program = P
 			update_icon()
@@ -310,7 +324,7 @@
 // Used in following function to reduce copypaste
 /obj/machinery/modular_computer/proc/power_failure()
 	if(enabled) // Shut down the computer)
-		visible_message("\The [src]'s screen flickers \"BATTERY CRITICAL\" warning as it shuts down unexpectedly.")
+		visible_message("<span class='danger'>\The [src]'s screen flickers \"BATTERY CRITICAL\" warning as it shuts down unexpectedly.</span>")
 		kill_program(1)
 		enabled = 0
 		update_icon()