Revert "Revert "Merge pull request #4026 from guardian/fronts-respect-grouping-news""

This reverts commit ec17fdb084a715e73b6c00ced73af597dc1c5e8d.
Merge branch 'master' of github.com:guardian/frontend into facia-naming
Introduce the Slice concept to facia
Fix spacing on top of image in the huge story container
Merge branch 'redux-fronts-respect-grouping-news' into facia-naming
Merge branch 'master' of github.com:guardian/frontend into redux-fronts-respect-grouping-news
Merge branch 'redux-fronts-respect-grouping-news' into facia-naming-global
Merge branch 'master' of github.com:guardian/frontend into facia-naming-global

Conflicts:
	common/app/assets/stylesheets/module/containers/_tag.scss
Merge branch 'master' of github.com:guardian/frontend into redux-fronts-respect-grouping-news
Fix spacing issue on top of huge stories
Remification for the nation /cc @phamann
Merge branch 'master' of github.com:guardian/frontend into redux-fronts-respect-grouping-news
Merge branch 'redux-fronts-respect-grouping-news' of github.com:guardian/frontend into redux-fronts-respect-grouping-news
initial change of html to reflect new designs
add high relevance slot
refactor of html and css, positioning and widths for article layouts
widths and positioning for fronts
positioning for wider breakpoints
on desktop only
Do fewer DOM queries/mods