[Imports] SASA bus stops import

[Martin Raifer]

Martin Koppenhöfer <dieterdreist at gmail.com> wrote:

> It is you who has to document that the license is OK. In this case, as  
> the public documentation states cc-by-nc, there should be something more  
> expressive than a citation from an email, e.g. a written letter with a  
> protocol number.

OK, I've now asked SASA to give us some kind of written confirmation of
the permission. I will upload it to the wiki then.

Martin