Add environment configurable emails settings

### What is the problem / feature ?

Configuring django's email settings were not exposed via environment variable configuration

### How did it get fixed / implemented ?

Added some code to pull email settings out of the environment

### How can someone test / see it ?

Code?

*Here is a cute baby animal picture for your troubles...*

![popcorn_the_ferret_04-600x400](https://f.cloud.github.com/assets/824194/2511894/46ba929e-b420-11e3-8250-b31c3592365d.jpg)