Working infinite scroll with full window scrolling

There broke when we stopped overflowing div's in favor of scrolling windows
Remove 'back' listener when DetailView closes
Cleaned up styling on search box
Fix scrolling in mobile view on places Result detail
Margin on facet list
Updated facet colours to pantone624

#branding
Set correct cursor for facets
Clear current search string
Set infinite scrolling threshold in one place
Merge branch 'master' of github.com:ox-it/moxie-js-client