fixed date calculation for highlight
fixes
fixed dates on homepage
fixed ordering of news items on homepage
fixed margin for related pane
Merge branch 'dev' of https://github.com/avalanche-canada/ac-web into dev

* 'dev' of https://github.com/avalanche-canada/ac-web:
  updates readme docs
  adds no fx from cache if date specified
  adds hiredis
  adds nginx programname