Waggon position indicator configurable count

[FunMaker]

Currently if we build something near a train station the waggon position indicators (White rectangles on the rails) will show up. Please make the count of these indicators configurable (1-20 maybe) because the fixed count of 5 indicators is okay but not sufficient if extra long trains are used. Same goes for position indicators at rail-signals.

[mophydeen]

+1

[Syrchalis]

Would also be great if trains would snap to the indicators when placing them at a train stop. Currently you need to put fuel into them and order them to drive up the the train stop.

[ssilk]

This last one is implemented.

I think the wagon position indicators should be changed somehow, but not with a configuration option. There are some better suggestions around this.