Resource-specific orders — Steam Revolution: The Age of Rail Steam update #47418

Added signal dialog that opens when clicking on a signal a second time. You can set the load orders from here, and is the only way to configure cargo specific orders.Added support for resource-specific loading and unloading orders. This makes it much more feasible to use multi-cargo trains if you want to.Updated the load and unload icons to be clearer. Now they are real icons instead of text with ? and | characters overlaid.Fixed ordering of regions in scores dialog to make more sense in terms of unlock order.