Remove legacy ads code
Use the normal flow of HTML to draw the site message, header, menus, subnavigation, and ads
Simplify subnavigation code'
Merge branch 'master' of github.com:guardian/frontend into tone-colour
Merge branch 'master' of github.com:guardian/frontend into html-flow-layout
Merge branch 'master' of github.com:guardian/frontend into html-flow-layout
Fix double display property
Refactor value
Merge pull request #2871 from guardian/html-flow-layout

Html flow / Layout refactor