New about page (and jobs) - DO NOT MERGE

Structure and image content for about page, plus integrated jobs to bottom of page.

Still needs final content, hyperlapse of office for team section, and perhaps a counter for the stats (they're always increasing)

![image](https://cloud.githubusercontent.com/assets/1246990/4476279/9ffd341c-4974-11e4-9781-43056d84ee3c.png)

Use `https://gocardless.com/...`