Clean up pylint reports of unused modules, duplicate imports, indent issues, relative import, extra ';', unneeded pass. Also added support for TypeError as I restructured accept header parsing a bit to remove uneeded "version" variable assignments

try:
    # Python 3+.
    from xmlrpc import client, server
    server.SimpleXMLRPCDispatcher
except (ImportError, AttributeError):
    # Python 2.
    import xmlrpclib as client
    import SimpleXMLRPCServer as server