Nightshifts & Randomized Station Time

This commit adds the Nightshift lighting mode from /tg/. From 19:00 to
07:00 in station time, the station will go into a reduced-lighting mode,
with dimmed lights across the station.

In conjunction with this, there is a new configuration option to start
the shift time at a random time other than 12:00, so that players are
more likely to experience a night shift (as opposed to having to have a
7 hour round).

code/modules/events/event_manager.dm

@@ -55,7 +55,7 @@
 	var/datum/event_meta/EM = E.event_meta
 	EC.available_events += EM
 
-	log_debug("Event '[EM.name]' has completed at [worldtime2text()].")
+	log_debug("Event '[EM.name]' has completed at [station_time_timestamp()].")
 
 /datum/event_manager/proc/delay_events(var/severity, var/delay)
 	var/list/datum/event_container/EC = event_containers[severity]
@@ -78,12 +78,12 @@
 		var/datum/event_meta/EM = E.event_meta
 		if(EM.name == "Nothing")
 			continue
-		var/message = "'[EM.name]' began at [worldtime2text(E.startedAt)] "
+		var/message = "'[EM.name]' began at [station_time_timestamp("hh:mm:ss", E.startedAt)] "
 		if(E.isRunning)
 			message += "and is still running."
 		else
 			if(E.endedAt - E.startedAt > MinutesToTicks(5)) // Only mention end time if the entire duration was more than 5 minutes
-				message += "and ended at [worldtime2text(E.endedAt)]."
+				message += "and ended at [station_time_timestamp("hh:mm:ss", E.endedAt)]."
 			else
 				message += "and ran to completion."
 
@@ -139,7 +139,7 @@
 			var/next_event_at = max(0, EC.next_event_time - world.time)
 			html += "<tr>"
 			html += "<td>[severity_to_string[severity]]</td>"
-			html += "<td>[worldtime2text(max(EC.next_event_time, world.time))]</td>"
+			html += "<td>[station_time_timestamp("hh:mm:ss", max(EC.next_event_time, world.time))]</td>"
 			html += "<td>[round(next_event_at / 600, 0.1)]</td>"
 			html += "<td>"
 			html +=   "<A align='right' href='?src=[UID()];dec_timer=2;event=\ref[EC]'>--</A>"
@@ -188,7 +188,7 @@
 			html += "<tr>"
 			html += "<td>[severity_to_string[EM.severity]]</td>"
 			html += "<td>[EM.name]</td>"
-			html += "<td>[no_end ? "N/A" : worldtime2text(ends_at)]</td>"
+			html += "<td>[no_end ? "N/A" : station_time_timestamp("hh:mm:ss", ends_at)]</td>"
 			html += "<td>[no_end ? "N/A" : ends_in]</td>"
 			html += "<td><A align='right' href='?src=[UID()];stop=\ref[E]'>Stop</A></td>"
 			html += "</tr>"

code/modules/events/money_hacker.dm

@@ -15,7 +15,7 @@
 		kill()
 
 /datum/event/money_hacker/announce()
-	var/message = "A brute force hack has been detected (in progress since [worldtime2text()]). The target of the attack is: Financial account #[affected_account.account_number], \
+	var/message = "A brute force hack has been detected (in progress since [station_time_timestamp()]). The target of the attack is: Financial account #[affected_account.account_number], \
 	without intervention this attack will succeed in approximately 10 minutes. Required intervention: temporary suspension of affected accounts until the attack has ceased. \
 	Notifications will be sent as updates occur.<br>"
 	var/my_department = "[station_name()] firewall subroutines"
@@ -50,7 +50,7 @@
 		T.date = pick("", current_date_string, date1, date2)
 		var/time1 = rand(0, 99999999)
 		var/time2 = "[round(time1 / 36000)+12]:[(time1 / 600 % 60) < 10 ? add_zero(time1 / 600 % 60, 1) : time1 / 600 % 60]"
-		T.time = pick("", worldtime2text(), time2)
+		T.time = pick("", station_time_timestamp(), time2)
 		T.source_terminal = pick("","[pick("Biesel","New Gibson")] GalaxyNet Terminal #[rand(111,999)]","your mums place","nantrasen high CommanD")
 
 		affected_account.transaction_log.Add(T)

code/modules/events/prison_break.dm

@@ -46,7 +46,7 @@
 
 	if(areas && areas.len > 0)
 		var/my_department = "[station_name()] firewall subroutines"
-		var/rc_message = "An unknown malicious program has been detected in the [english_list(areaName)] lighting and airlock control systems at [worldtime2text()]. Systems will be fully compromised within approximately three minutes. Direct intervention is required immediately.<br>"
+		var/rc_message = "An unknown malicious program has been detected in the [english_list(areaName)] lighting and airlock control systems at [station_time_timestamp()]. Systems will be fully compromised within approximately three minutes. Direct intervention is required immediately.<br>"
 		for(var/obj/machinery/message_server/MS in world)
 			MS.send_rc_message("Engineering", my_department, rc_message, "", "", 2)
 		for(var/mob/living/silicon/ai/A in player_list)