chore: changed validLocations.js

[0xflotus]

I translated the names of the locations

[cgrail]

I'm not sure about this PR. I usually try to use the englisch name from Wikipedia for a location. But I'm not always consistent about this. Sometimes I've used the local name.
With names like Munich or Vienna, I think more international people would expect those names. But locales would expect München or Wien.
Maybe we also need a translation or alternatives for names.

@prigara @nimzco What do you think?

[cgrail]

Closing it as I got no response. I would leave it with the current naming. Maybe we'll revisit the topic in the future again.