bridgestrap metrics page should sort its hashed fingerprints

On https://bridges.torproject.org/bridgestrap-collector : I bet those lines are sorted by the original (unhashed) fingerprint. It might be smart to sort the (after hash) hashed fingerprints to get rid of that original secret.

I don't see a big privacy failure from revealing simply the original ordering of the fingerprints. But maybe I'm just not being creative enough. :)