Small Stat Tweaks (#3695)

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## About The Pull Request
Just tweaks the two new stats to be better organized, and adds the total
cost of crate types purchased.

todo: increment cargo purchases stat version to 2
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## Why It's Good For The Game

Better organized stats to get a better picture of what's happening
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## Changelog

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code/modules/cargo/order.dm

@@ -25,7 +25,8 @@
 	src.reason = reason
 	src.paying_account = paying_account
 	if(pack)
-		SSblackbox.record_feedback("tally", "crate_ordered", 1, pack.name)
+		SSblackbox.record_feedback("nested tally", "crate_ordered", 1, list(pack.name, "amount"))
+		SSblackbox.record_feedback("nested tally", "crate_ordered", pack.cost, list(pack.name, "cost"))
 
 /datum/supply_order/proc/generateRequisition(turf/T)
 	var/obj/item/paper/requisition_paper = new(T)

code/modules/overmap/missions.dm

@@ -39,7 +39,7 @@
 	return ..()
 
 /datum/mission/proc/accept(datum/overmap/ship/controlled/acceptor, turf/accept_loc)
-	SSblackbox.record_feedback("tally", "mission_accepted", 1, name)
+	SSblackbox.record_feedback("nested tally", "mission", 1, list(name, "accepted"))
 	accepted = TRUE
 	servant = acceptor
 	LAZYREMOVE(source_outpost.missions, src)
@@ -64,13 +64,13 @@
 	return ..()
 
 /datum/mission/proc/turn_in()
-	SSblackbox.record_feedback("tally", "mission_succeeded", 1, name)
-	SSblackbox.record_feedback("tally", "mission_payout", value, name)
+	SSblackbox.record_feedback("nested tally", "mission", 1, list(name, "succeeded"))
+	SSblackbox.record_feedback("nested tally", "mission", value, list(name, "payout"))
 	servant.ship_account.adjust_money(value, CREDIT_LOG_MISSION)
 	qdel(src)
 
 /datum/mission/proc/give_up()
-	SSblackbox.record_feedback("tally", "mission_abandoned", 1, name)
+	SSblackbox.record_feedback("nested tally", "mission", 1, list(name, "abandoned"))
 	qdel(src)
 
 /datum/mission/proc/can_complete()