Email Configuration Settings

Add email configuration settings

``` Python
EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
EMAIL_HOST = "smtp.gmail.com"
EMAIL_HOST_USER = "foo@gmail.com"
EMAIL_HOST_PASSWORD = 'bar'
EMAIL_PORT = 587
EMAIL_USE_TLS = True
DEFAULT_FROM_EMAIL="foo@gmail.com"
```
