* Use PortalDat skill table instead of reflection properties
* Update showstats comments
* remove attributes from Skill enum (Values now come from dat)
* Remove attributes from PropertyAttribute2nd (Values come from dat now)
* Landblock, worldObjects to private and adjacents->Adjacents
* Landblock remove PhysicsObj != null check. No need. 6% CPU savings
* showstats shows [Unusable] for untrained skills which are unusable
* Improve performance of GetWorldObjectsForPhysicsHandling
* Improve Skill IsUsable
* Updating showstats
* Fixing null pointer exception in IsUsable