Ad render tweaks

Now we have more sensible looking data, few JS fixes to the graphs

Also increased the Ophan api timeout to 5 secs for the ad render time calls, they're particularly slow due to parent/child type setup in elasticsearch

![screen shot 2014-06-18 at 14 27 57](https://cloud.githubusercontent.com/assets/74132/3314147/992c2212-f6ed-11e3-8136-a38c45910159.png)