Implement Core.TickCount

Convert movement, actions (lift/use), combat, and spells to use Core.TickCount and avoid DateTime caveats (performance, system time dependency, etc)
Refactor DateTime.Now to DateTime.UtcNow
Add LOS check for Iron Maiden addon

Scripts/Engines/ConPVP/Trophy.cs

@@ -37,7 +37,7 @@ namespace Server.Items
 		{
 			m_Title = title;
 			m_Rank = rank;
-			m_Date = DateTime.Now;
+			m_Date = DateTime.UtcNow;
 
 			LootType = LootType.Blessed;