Update map

Changes
* add fle logo to banner
* link to FLE pages from inside the about modal
* capitalize a C 
* add some transparency for data popovers that have no data 
![selection_030](https://cloud.githubusercontent.com/assets/1319950/3560136/5916f67c-095b-11e4-83e9-830029a627df.png)
![selection_031](https://cloud.githubusercontent.com/assets/1319950/3560140/61ba6d40-095b-11e4-9be3-a86749c92ad8.png)
![selection_033](https://cloud.githubusercontent.com/assets/1319950/3560144/728100e4-095b-11e4-80cf-c90c9cb8edd7.png)