RA Summary Pages

Pulls statistics out of Catalog data for each RA harvested from NGDC.  Annotates it with static data that I compiled by hand (full name, banner image, description, links).

This a PR to denote its WIP status for collection of data - I poked around on each RA's site to find the right text etc, and tried to grab banner images where I could, couldn't find them for everyone.  Also, there are likely more links that need to be added.  Also, figure out what to do with the non-RAs - do they fit into this model as well?

The data is in python because it's nearly static (therefore does not need a database backing) and also to encourage contributions from the RAs - just fork/commit/PR!

Here's an example for MARACOOS (the menu is outdated here):
![screenshot 2014-07-27 19 40 10](https://cloud.githubusercontent.com/assets/228715/3715712/426082f6-15f2-11e4-8c97-a8d415db0cb7.png)

Also the new dropdown nav:
![screenshot 2014-07-27 20 59 00](https://cloud.githubusercontent.com/assets/228715/3715725/9a182cec-15f2-11e4-8d11-35c4da801369.png)