When the user clicks on their channel avatar, display the new old settings page with the new look

Mocks: https://projects.invisionapp.com/d/main#/console/18532170/400020222/preview

• Move the channel avatar to the right hand side
• Remove the hamburger menu
• Clicking the channel avatar should open the old settings menu
• Use the old settings menu, but update the look
• Move the footer links to the bottom of the settings menu
• Make the more link take them to the "/p" static content index page
• responsive design
• light mode
• dark mode
• unit tests
• e2e tests

changed milestone to %Sprint::01/15 - Youthful Yabby

added scoped labels

changed weight to 6

changed time estimate to 6h

added to epic &93

changed the description