Wrapper method to update the stats.

def update(self):
        """Wrapper method to update the stats."""
        # For standalone and server modes
        # For each plugins, call the update method
        for p in self._plugins:
            if self._plugins[p].is_disable():
                # If current plugin is disable
                # then continue to next plugin
                continue
            # Update the stats...
            self._plugins[p].update()
            # ... the history
            self._plugins[p].update_stats_history()
            # ... and the views
            self._plugins[p].update_views()