BBC: Move to "products_simple"

Using `products_simple` allows us to replace our custom detail template that we borrowed from recipes (and that template breaks on mobile and when only a single item is shown).

Works now with single item:
![screen shot 2014-05-15 at 7 54 51 pm](https://cloud.githubusercontent.com/assets/81969/2992243/ef342cfc-dc8c-11e3-9ead-55278f04ca0e.png)

Tile view:
![screen shot 2014-05-15 at 7 55 04 pm](https://cloud.githubusercontent.com/assets/81969/2992244/f56d5ce2-dc8c-11e3-8213-bae47d8bf352.png)

And mobile view:
![screen shot 2014-05-15 at 7 55 27 pm](https://cloud.githubusercontent.com/assets/81969/2992247/fa4a26f0-dc8c-11e3-910b-8f49c08b6129.png)