Add curved Station Spacer#5071

Hi,

please give us curved station spacers so we can again fit longer trains that actually do some work without absurdly long stetched out straight-long-line stations!
BIG regression in train playability from EA :-(

thanks!

@schafan – i see no reason for the spacer stations but if they have to be part of the system for some play test reason … then a 90 degree spacer station is needed for both internal and external bends u vs n and right vs left