Add summary and topics for databases.

Closes #264 

Haven't taken out the date that would make ERIC match the mockup but I think that'll settle down after we close out the other search results related tickets in the sprint.

### Examples
---
![eric](https://cloud.githubusercontent.com/assets/96776/3407450/ac29e664-fdab-11e3-9844-bf4bb9d089e3.png)

![topics](https://cloud.githubusercontent.com/assets/96776/3407449/abe445dc-fdab-11e3-80c7-70654f41ba10.png)