* Netdb: Speed up collection of all the floodfill peers by using
           PeerManager.getPeersByCapability()
  * PeerManager: Capability cleanups

    - Cancel our JVM shutdown hook when shutting down
    - Run a spinner task so shutdown always completes
    - exit() instead of halt() so other JVM shutdown hooks run
    - Prevent duplicate wrapper notifier hooks
    - Notify the wrapper twice, once for stopping and once for stopped

    clock shifts by partially restarting the router. Also improve
    restarts initiated from config.jsp
    Tickets #465, #468, #494
  * UPnP: Wait for a while to ensure port removal at shutdown or restart

  * Shutdown:
    - Clear more resources in peer manager, netdb, stat manager,
      session key manager, naming service, tunnel dispatcher,
      OCMOSJ (result of testing with jvisualvm)
    - Don't call wrapper on shutdown (starting two threads) if we
      were started with runplain

    - Fix Polish po file
    - Install as a service by default on Windows again
    - Change CPUID getters to package private
    - Split new jbigi install messages into two lines
    - Javadocs

    - Implement and call shutdown for BandwidthRefiller
    - Implement and register shutdown hook for Timestamper
    - Implement and register shutdown hook for Jetty console server
    - Fix UPnP-SSDPNotifySocket thread not stopping
    - Fix all but one UDP PacketHandler threads not stopping

      - Disable zh translation in graphs on windows due to font issues
      - Fix NPE at startup
      - Graph tweaks

    * DataHelper: Speed up eq() (Ticket #437)
    * HTTPServer: Strip inbound X-Accept-Encoding header
    * netdb.jsp: HTML fixes
    * Plugins: Log error when console server not found
    * Reseed: Log tweak

    - Disable graphs on JVMs that crash

    - Refactor handling of required stats
    - Shorten description of required stats
    - Improve save messages on configstats.jsp
    - Change bw.sendBps and bw.receiveBps stats to bytes, not Kbytes
    - Expires directive for graphs

      - Nicer profile dump
      - More efficient profile lookup for display
      - Fix dumpprofile NPE
      - Change file suffix from .dat to .txt.gz

- Fix HTML errors
- Refresh improvements
- Fix Rate.equals() bug
- More cleanups

- Restart line in graphs
- Restore zh fonts in graphs

               configpeer.jsp, configtunnels.jsp, configupdate.jsp

               logs.jsp, netdb.jsp, profiles.jsp, stats.jsp

    * Console: Consolidate nonce handling