parser update, use RSS URL
don't die in custom_draw if enlarge_scrollregion_for_layer failed
osm2bbd: restrict splitlonglines hack to just some files

fast_plot_str() is only used for streets (if at all), so restrict the
hack only to a few output files

Problem is that splitted area-like features are simply broken. Seen
with "Elbe-Hafen Wittenberg".
bbbike chooser: layout fixes and nicer toplevel titles
data update