Request for comment: add date header to new style Facia Cards container

This wires up adding the date and latest update information to a new style Facia Cards container:

![screen shot 2014-10-02 at 16 00 39](https://cloud.githubusercontent.com/assets/1001642/4492921/4561a7f0-4a45-11e4-8cd6-69bbdc7a2799.png)

We need, however, to decide how we're going to choose whether it gets applied to a given collection. @stephanfowler @kungpochicken We could make this an option in the tool -- or we could hard code some collection IDs, as I already have here for testing -- or we could use some logic based on the position of the container within certain fronts in the config.