prepare to merge with new backend api
Merge branch 'master' of https://github.com/CMUSV-SmartReader/SmartReader

* 'master' of https://github.com/CMUSV-SmartReader/SmartReader:
  Jsonfy feeds
  Get category Id
  connect articles to user and usercategory
prepare merge with new db connection
Merge branch 'master' of https://github.com/CMUSV-SmartReader/SmartReader

* 'master' of https://github.com/CMUSV-SmartReader/SmartReader:
  change to ec2 mongo