Loads the plotly notebook resources.

def load_nb(cls, inline=True):
        """
        Loads the plotly notebook resources.
        """
        from IPython.display import publish_display_data
        cls._loaded = True
        init_notebook_mode(connected=not inline)
        publish_display_data(data={MIME_TYPES['jlab-hv-load']:
                                   get_plotlyjs()})