Create admin namespace

https://trello.com/c/iqzQ3SyP/16-create-a-namespace-for-admins

![image](https://cloud.githubusercontent.com/assets/8646429/5171012/4ad033e8-73e2-11e4-9678-a9acd5991a51.png)

I agree - it was too much for 1 card. Had I realized the number of changes it entailed I would have broken it up better.

"Admins" in my app are just "representatives" for their charity. It could easily be someone working the front desk at Charity XYZ. I could imagine much sadness if competing charities could alter eachother's data, so they are given only enough power to process donations that come in to them.