Added a middleware
Added code for managing the registry
Change the Dummy in complexity
Fixed to register the DummyImpl in registry with includeme, In order to test the BaseRegistryManager
NoProvidedInterfaceError is deleted because it was to use the zope.interface.exceptions.BrokenImplementation
Fixed registry.interfaces in the correct state

- was wrong the way method of interface definition
- Add to verify IRegistryManager
Add to verify BaseRegistryManager
Add test of sandstorm.registries
Add the changes and test to summarize the error in the validation of the Interface
add context manager for with statement