Simplified cards A/B test

- Hides CTA buttons
- Simplified price tags
- LP reviewed tag gone
- Top choice ribbon now simpler
- Location moved to card footer

![screen shot 2014-10-07 at 17 59 27](https://cloud.githubusercontent.com/assets/271645/4546647/8ded19f6-4e45-11e4-900e-6d5ebbd72049.png)

![screen shot 2014-10-07 at 18 16 00](https://cloud.githubusercontent.com/assets/271645/4546655/a0eaa3fc-4e45-11e4-98ed-f53e60ea0f71.png)


I just meant the combination of the `rgba` background and the fallback.

```
@mixin backgroundColour($colour, $opacity: 1)
  background: $colour
  background: rgba(red($colour), green($colour), blue($colour), $opacity
```