Feature request: Color gps track by speed

[Christian Köstlin]

I think the attempts overview shows the speed already, would also be nice to see that on the tracks on the map.

[Mathias Griessen]

Added possibility to select a single attempt. The particular attempt is then showed 

lonely one the map with speed colouring matching the colours of the attempt speed map showed in the bottom of the map. 

[Christian Köstlin P]

thanks a lot, looks awesome!

[Christian Köstlin P]

one tiny addition could be to add the duration of the attempt in the dropdown box.