Should dependency injection be used here?

[git4sun]

I implemented a play 2.5 app with phantom a few months ago with very similar approach of this project. When going to production, I realized that I have to maintain a separate configuration file to specify the clusters and keyspaces. So I created a service with a trait and a Singleton class with play Configuration injection, and then initialize the contactpoint with settings from play configuration files. Then controllers can inject the service when needed. However, the service code is kind of ugly since extends AppDatabase(Defaults.Connector) cannot be done in a class. Is there an elegant way of doing this?

[wsargent]

Added this in #9