[1.1.0] Train limit should have constant setting

[Turbofant]

The new Train limit can only be set as circuit network signal. Somtimes, it would be usefull to set a fixed limit (e.g. one).

In combinators, one can select a cicuit network singnal OR set a constant. The train limit feature should also have this feature.

[boskid]

Is this trolling? constant limit is usefull without wires so it is not in control behavior gui but directly in the train stop.

[Turbofant]

Sorry! I found it. It's in the main window of the train stop. I just looked at the circuit network settings.

I just got a little overexited for the new feature. Great work!