NF new params for a multipanel figure with all views

[mvdoc]

Example output:

Code to generate example:

import cortex
import numpy as np
from cortex.export.panels import params_flatmap_inflated_lateral_medial_ventral as params

subject = 'S1'
shape = cortex.db.get_xfm(subject, 'identity').shape
data = np.arange(np.product(shape)).reshape(shape)
volume = cortex.Volume(data, subject=subject, xfmname='identity')

cortex.export.plot_panels(volume, **params, save_name="example-new-view.png")