add surface to bicycle path to Wesendorf
add details near Schöppenstedter Turm
fix course of new Ringgleis section
add new Ringgleis part (currently under construction)
Salzdahlumer Str: improve mapping of bike+foot paths
add surfaces to minor roads in Rümmer
improvements Cremlingen/August-Steinmetz-Ring
improvements Cremlingen/Herzogsberge
change path type in Cremlingen