Add sortByGroup to Block and sortTrailsByGroup
Force sort on update to collection, delete from collection and update of
collection meta
Profile nav popup is properly aligned
move has-page-skin class onto body, so header can see it
Fixing PR
Merge pull request #4474 from guardian/profile-pages-info

Profile pages info
Sort using groupBy
Merge branch 'fix-group-order'
Constrain path length to three
Fix get on Option to get on Map
Fold multiple slashes to one
Insctuctions for Chrome
Polyfill function.bind take 3
Simple series test

Checks for series header and container
extend-opt-in-switch
byline pic margin tweaks
Source maps work 
Update expired switches
Merge pull request #4493 from guardian/update-switche-dates

Update expired switches
minor content template tweaks