Changes

** '''''closed_road''''' Source of the detour. This cutscene will be generated on the place of detour origin.

** '''''border_prefab_node''''' These cutscenes will be generated between each closing prefab (prefab where the traffic is diverted) and closed road.

** '''''road_block_left''''' These cutscene will be generated on closed road lanes before the closing prefab. Traffic go round to the right.