Automatic figures generation from .csv

Auto-generation from figures .csv gives two main benefits:

1. Can automatically order the images. Currently it's just by first
reference to them, but a future implementation could do something
fancier to find a "minimal seeking" ordering.

2. Saves on a lot repetitive latex formatting / typing.

... really not sure why section5.csv is in this commit; I thought that
was already in last commit.