Traktor

- Fixes.
- TraktorConfig accepts config file location. Needed for application that
will reuse it's configuration structure but in another file, like
`traktor-server`.


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- Fix broken json output.
- List all tasks without specifying the project.
- Database export to json file.
- Database load from json file.
- Timer commands are now top level commands.
- Add support for switching between test and production database.
- Add interactive status.
- HTTP API added.
- Client for the HTTP API created.
- Rewrite in django.
- Admin interface added.
- Client is synchronous now.
- Extract server component to traktor-server project.


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- Fix missing alembic migrations in he package.
- Add default task option. If the task is not provider on timer start the
default task will be used.
- Refactor.


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- Initial beta release.