better search suggestions algorithm
Merge branch 'master' of https://github.com/Financial-Times/next-dobi into search-suggestions

* 'master' of https://github.com/Financial-Times/next-dobi: (22 commits)
  Fix the most popular page
  Remove context (localstorage) related stuff
  Remove reliance on deprecated haikro api
  Add hostedgraphite test keys to make
  Add next-metrics instrumentation to search route
  Clear notifications on following page and article and stream
  Make sure errors can be caught
  Put b2b group stuff behind feature flag
  Upgrade wrapper
  Upgrade wrapper
  Add raven middleware after the router
  Try to send error with all context to sentry
  Semicolon
  Throw err at end of promise chain
  Don't 404 on an empty stream
  Centre stream
  Use latest version of article card
  Just die if response bad
  init articles after loading following
  Remove JS included in article-card-component
  ...

Conflicts:
	server/controllers/search.js
Merge pull request #166 from Financial-Times/search-suggestions

better search suggestions algorithm