implemented custom tag for feature flagging in templates
Merge branch 'master' of https://github.com/Financial-Times/next-dobi into flag-exposure

* 'master' of https://github.com/Financial-Times/next-dobi:
  Remove unused class
  Fix fastft expandable cards
  SCSS improvements
  Unbold the streams in related topics
  FIx merge issue
  Dont show if no related
  minor style updates
  General styling of article and cards
  Add related tags to stream
  Video styling and scss refactor
  try again
  Relative path
  Localhost probably won't work so well on not localhost
  Puts ads in stream behind flag
removed the /components route
Now actually works for negated flags
Update flag.js
Merge pull request #116 from Financial-Times/flag-exposure

Flag exposure