changes list label to Default

Fixes #665 

List view changed to Default view in UI

Note: The parameter for default view is still `list`.

![screen shot 2014-08-07 at 11 40 04 am](https://cloud.githubusercontent.com/assets/1656824/3847092/652904a2-1e62-11e4-9cc1-697afc840f62.png)