* Reachability:

      - Call the previously unused profile.tunnelTestFailed()
        (redefined to include a probability argument)
        and severely downgrade a peer's capacity upon failures,
        depending on tunnel length and direction.
        This will help push unreachable and malicious peers
        out of the High Capacity tier.
      - Put recent fail rate on profiles.jsp
    * ProfileOrganizer: Logging cleanup
    * eepsite_index.html: Update add-host and jump links
    * HTTP Proxy: Remove trevorreznik jump server from list