add mock for summary and already read
random popular and fix read/unread
Merge branch 'master' of https://github.com/CMUSV-SmartReader/SmartReader

* 'master' of https://github.com/CMUSV-SmartReader/SmartReader:
  Quick fix bugs
  Finally finish the performance enhancment
Merge branch 'master' of https://github.com/CMUSV-SmartReader/SmartReader

* 'master' of https://github.com/CMUSV-SmartReader/SmartReader:
  Why some article does not have id
  mock article properties for demo
  minor behavior cleanup
  redo the page layout, load articles
Merge branch 'page-relayout'

* page-relayout:
  random popular and fix read/unread
  add mock for summary and already read