Next

This should come into the 0.8 branch (that will be master as soon as we switch over 0.7).

Mainly this is (almost trivial) cleanup and simplification of build / packaging / setup scripts.

Also, it fixes:

 * #377 - you can now install the registry with or without bugsnag, by using an option (`pip install docker-registry[bugsnag]`)
 * #376 - the version is no longer duplicated in different places of the code / setup.py - it's in one place only, under docker_registry/server/__init__.py
 * #368 - the registry port is now more consistently handled, along with other gunicorn start options, and some minor cleanup / synching in other launch scripts

And add more (removal) tests to the test suite.