trackmap.net update: Sweden

I have updated the two track maps for the Malmö and Helsingborg areas in southern Sweden. These maps used to be based on sketches I did in 2000; now they are mostly brought up to last August. Some follow-up work on the Citytunneln connection was still going on at that time; I'm planning an excursion this summer to find out how it ended up.

Meanwhile, I have done a few additional updates on the Copenhagen map: The nortwestern end of the Helgoland depot was rebuilt some years ago; the map has now been changed to fit. And the line maintenance sidings between the S-train tracks north of Hellerup were probably never shown correctly – I've redrawn that part of the map from scratch.