Fixing environment variable problem

  - Sensitive data in the application is pulled from `ENV`
  - To configure your sensitive information add a KEY and VALUE to `config/application.yml`
  - Sensitive data that is global goes in the top level namespace
  - Sensitive data for environment specific use the named key (ie development uses the top level `development:` namespace)
  - To quickly setup the base required run the task `rake config:copy`
  - I've added that step to the `setup` script.
  - I've changed some of the keys for consistency sake.

UPDATE

  - To only ask for certain environment namespaces (ie for deploying to production) define the `RAILS_ENV` environment variable. IE:

``` bash
$ ssh production
$ rake config:copy RAILS_ENV="production"
```

It will now ask you only for the global and production key/values.