Feature: Add Swagger documentation to API

[jraddaoui]

Add Swagger documentation and UI using https://github.com/concentricsky/django-tastypie-swagger

[jraddaoui]

Requires the fix for #298

[jraddaoui]

Doing the same in https://github.com/artefactual/archivematica will require more work because almost everything in there are custom methods.