Minor list UI suggestion

The organization list page should say something like "You have not created any organizations yet" on the list page. Right now it just shows the buttons and a lot of blank space: 

<img width="1381" alt="screen shot 2018-01-30 at 9 02 17 am" src="https://user-images.githubusercontent.com/5016731/35573377-899f2cf6-059c-11e8-8fc5-437541ff0ce9.png">
