Add 'Stanford Fancy' SoA 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)

You would call gen_cert_date this way:
```
    date_string = gen_cert_date(generate_date, self.issued_date)
```