"Compare dynspread effect" in docs doesn't work

See here: http://holoviews.org/user_guide/Large_Data.html

If it isn't possible to compare `dynspread` vs no `dynspread` in the docs then I'm not sure if it is worth putting it in. Maybe a sequence of static screenshots at different resolutions?

@jbednar suggested that this is because the docs server doesn't have live Python processes running behind it (which makes sense), but it still (for me) begs the question of "why put this in the docs".