This is part of the change to expose the MongoDB client in fh-db to the
user.
This allows a new act to be called without a type, called getDitcher which
will return the `ditcher.Ditcher` object created in the
`localdb` module. This will then expose the `Database` object and the
`mongo.Db` client within it.
Further changes are required in `fh-mbaas-api`.
This is part of the change to expose the MongoDB client in fh-db to the user.