Defined synchronization background task to be executed by celery
Fixing the backend connection to mongodb by explicity adding credentials
Merge branch 'dev/dj-autosync'

* dev/dj-autosync:
  Fixing the backend connection to mongodb by explicity adding credentials
  Defined synchronization background task to be executed by celery
Merge branch 'master' of github.com:SlideAtlas/SlideAtlas-Server