Added Deleting to Components
We don't need to use Lists for deletion - instead we can just null the elements in a list
EntitySystemStructureMapRegistry added, although frankly I'm not sure if it's set up propertly
I think that's the EntitySystem done, for now. There are still a few things left to do, but it should work as I expect it to for now.
I knew I missed something - added main method to Netcraft, and fixed EntitySystemStructureMap to allow us to resolve IUniverse