Merge branch 'bug-fix---article-imgs'
Author

- Added author and relevant models, transformations etc…
Merge branch 'master-author'
Now able to turn channels on and off
Content Deactivation

- Sub-channels now respect the is_active flag
- Channels now respect the is_active flag
- Articles are no longer returned if the channel/sub-channel is inactive
Testing and email updates

- RegistrationResponseMaker, moved notification to after newsletter
signup
- Added try/catch to newsletter subscribe in the cases where a user
email address is already in the list
- Added confirmUserSubscribed method
- Added config var for mailChimpNewsletterList
- New MailController for testing email
- New route for MailController
- RegisterSubscriberCept now test for user addition to Mailchimp
mailing list