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/Reports/Objects/Staffing/QueueStatus.cs

@@ -31,7 +31,7 @@ namespace Server.Engines.Reports
 
 		public QueueStatus( int count )
 		{
-			m_TimeStamp = DateTime.Now;
+			m_TimeStamp = DateTime.UtcNow;
 			m_Count = count;
 		}