Reworking Bot API and optimizing for loops in admin code (#6355)

code/controllers/subsystems/statistics.dm

@@ -54,7 +54,7 @@
 
 	// Handle population polling.
 	if (config.sql_enabled && config.sql_stats)
-		var/admincount = admins.len
+		var/admincount = staff.len
 		var/playercount = 0
 		for(var/mob/M in player_list)
 			if(M.client)

code/controllers/subsystems/vote.dm

@@ -432,7 +432,8 @@ var/datum/controller/subsystem/vote/SSvote
 				var/admin_number_present = 0
 				var/admin_number_afk = 0
 
-				for (var/client/X in admins)
+				for (var/s in staff)
+					var/client/X = s
 					if (X.holder.rights & R_ADMIN)
 						admin_number_present++
 						if (X.is_afk())