Start the configeditor

        :returns: None
        :rtype: None
        :raises: None

def run(self, ):
        """Start the configeditor

        :returns: None
        :rtype: None
        :raises: None
        """
        ra = SceneReleaseActions()
        mayawin = maya_main_window()
        self.rw = ReleaseWin(FILETYPES["mayamainscene"], parent=mayawin)
        self.rw.set_release_actions(ra)
        pm = MayaPluginManager.get()
        genesis =  pm.get_plugin("MayaGenesis")
        c = genesis.get_config()
        try:
            f = models.TaskFile.objects.get(pk=c['lastfile'])
        except models.TaskFile.DoesNotExist:
            pass
        else:
            if f.releasetype == 'work':
                self.rw.browser.set_selection(f)
        self.rw.show()