Fix public_document_url for rake tasks

when overriding the host
Rake task for published content by org

https://www.pivotaltracker.com/story/show/48644065
include mainstream links
remove comments
Extend published_editions

Removing mainstream links and add in more data
Merge pull request #771 from alphagov/reports

Extending the reports rake task

https://www.pivotaltracker.com/story/show/54897748