distance computation

[pgrandjean]

seems like some distances are not correctly computed. example:
CGI-STL should be close to 182 km, but is reported as 165 km
MAZ-SJU should be close to 122 km, but is reported as 112 km

[da115115]

Thanks for reporting that issue!

The distance is calculated in the Django (Python) view script directly.
Do not hesitate to create a pull request. Or, if you do not have time, could you please point to your preferred formula?