Add some EFA trip types to local.scss

This commit adds the trip types "SB", "Rufbus", "Regionalbus", "Landbus", "BSV", and RVV-Bus-Linie" to the "Bus" category.
It adds the trip types "Stadtbahn" and "Niederflurstrab" to the "Tram" category.
It adds the trip type "UBAHN" to the "U-Bahn" category.