Replace our load-order-depending spinup with an Inversion of Control pattern

[jessebeach]

We have classes like Case, Test and TestCollection that have dependencies. These dependencies are loaded, by virtue of load and execution order, at the right time. We need to make the load process more robust in order to modularize Quail and make it more resilient.

Project that provides inversion of controll support. https://github.com/cujojs/wire