* DataHelper, Router:
      - Save config files in UTF-8 rather than the default encoding,
        since we read them in UTF-8
    * jetty.xml: Change encoding to UTF-8
    * logs.jsp: Add system encoding
    * NTCP: Clean up clock skew shitlist message
    * Shitlist: Clean up expire message
    * WorkingDir: Ensure modified files are processed with UTF-8 encoding