Started P2P rework (#2966)

* First iteration of P2P rework

Changed frequency to short instead of long.
Added a per grid RNG to request a new frequency, hopefully without many collisons.
Added a helper to convert between a frequency and 4 colours

src/main/java/appeng/spatial/StorageHelper.java

@@ -139,6 +139,8 @@ public class StorageHelper
 				passanger.startRiding( entity, true );
 			}
 		}
+		
+		entity.world.updateEntity( entity );
 
 		return entity;
 	}