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)


The content area text overflow gradient thingy, https://github.com/lonelyplanet/rizzo/blob/master/app/assets/stylesheets/core/core_components/cards/_enhance.sass#L4