Add v3 dynamic cert template and logic

@jrbl - Stanford Fancy SoA changes

Includes fancy autoscale and centering code.

![stanford_soa](https://cloud.githubusercontent.com/assets/3364609/5308628/e1473810-7bcd-11e4-9d49-cae2b9af24cb.png)

Is this used on the right side, too? Perhaps we could call this something generic like ```GUTTER_WIDTH``` and not have ```DATE_INDENT_RIGHT```?  To me, GUTTER_WIDTH speaks of the blank spaces at the left and right edges of the page more immediately and clearly than MAIN_INDENT, which makes me wonder whether it's a page indent or a block indent... I don't know. I'm open to argument, but using uniform gutters and then just keeping that in a variable both seem virtuous to me.