Attachments on news articles
using a presenter messes with the respond_to? checks

https://github.com/drapergem/draper/blob/v0.12.3/lib/draper/base.rb#L210
also fix role presenter to use speech and new presenters
Fix tests, include alternative formats
Merge pull request #306 from alphagov/attachments-on-news-articles

Attachments on news articles