Networking Additions on Resource and Terrain

-Fixed and hooked TerrainLayer.Server and Client Event methods
-Removed Code on mouse scroll that is causing a problem
-Moved event registers to CoreEngine constructors to hook them once only
-Fixed a bug where client movement is not resetting
-Fixed null texture handling in TerrainLayer.renderMap()
-Added Untested methods for ResourceManager which verify and load files
to client(not implemented to CoreEngine because net Sessions don't fit
resource model)
-Unfinished menu updates to get TextForm working
-Unfinished work on Server discovery