added OnMouseSelectRayPick (RJ), enabled multiple structure selection
added OnMouseSelectRayPick (RJ), enabled multiple structure selection

nakijun/vtp,markraz/vtp,markraz/vtp,nakijun/vtp,markraz/vtp,seanisom/vtp,seanisom/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp,markraz/vtp,markraz/vtp,seanisom/vtp