fix: replace hardcoded 'html' as template directory Template directory is now determined by loading the config file from the tracker home and using the template setting. Also fixed error message when polib import fails to indicate extraction is only from thml templates.

try:
    # Python 3+.
    from xmlrpc import client, server
    server.SimpleXMLRPCDispatcher
except (ImportError, AttributeError):
    # Python 2.
    import SimpleXMLRPCServer as server
    import xmlrpclib as client  # noqa: F401