Decode percent-encoded characters in qualified search terms
From legacy/trac#24311 (moved): "Second, Oniono does not decode percent-encoded characters in qualified search terms, even though it probably should do that. That means that even if Atlas sent over a query like
https://onionoo.torproject.org/summary?search=contact:%3Cnone%3E, Onionoo wouldn't decode it. It would just return an empty result set, because there are no contact lines with
%3Cnone%3E. That's different from the
contact parameter which is decoded correctly."