Implement general (technical) feedback page.
Implement the money advice page.
Add links to give feedback to the article show page.
Put the feedback panel on articles behind a feature toggle.
Remove the ActionMailer mailer.
Add mail gem to Gemfile.
Setup mail gem defaults.
Move Core::ConnectionFactory to Core::ConnectionFactory::Http.
Move Core::Connection to Core::Connection::Http.
Introduce mailer as a connection type in the registry.
WIP - basic integration of the smtp connection with a repository.