Implement client-side Socket.IO Service
Refactor app spec
Add silent flag to Cells color setter to avoid infinite change-event triggering
Implement App to initialize SocketService server/client communication
Implement Socket.IO Server Runner
Fix cell event context binding
Merge branch 'feature/collaboration' into develop

* feature/collaboration:
  Fix cell event context binding
  Implement Socket.IO Server Runner
  Implement App to initialize SocketService server/client communication
  Add silent flag to Cells color setter to avoid infinite change-event triggering
  Refactor app spec
  Implement client-side Socket.IO Service