Correct title of "Publishing CMA" feature
Whitespace
Decouple SpecialistDocument from Artefact

(pairing with @elliotcm)
Bump content models and fix tests for validations

(pairing with @elliotcm)
Add document publish status to index page

Requires front-end tidy up.
Merge pull request #18 from alphagov/decouple-artifacts

Decouple artefacts