Engine.buildRegistry()

This creates a registry with the default Ember naming conventions.

It also configures the registry:

• registered views are created every time they are looked up (they are not singletons)
• registered templates are not factories; the registered value is returned directly.
• the router receives the application as its namespace property
• all controllers receive the router as their target and controllers properties
• all controllers receive the application as their namespace property
• the application view receives the application controller as its controller property
• the application view receives the application template as its defaultTemplate property