Start Using FactoryGirl closer to its intended way of being used

[dflionis]

In anticipation of a massive PR being merged to master that contains a lot of spaghetti-like factories, we need to make it a point in the future to clean up the factory directory. We're currently trying to recreate our real world universe in FactoryGirl which creates dependencies that FactoryGirl is not made to handle. Instead of putting players on the wrong teams in the specs in order to prevent collisions, we should make the factories more dynamic so that they always create new objects through their complex web of associations.