Code refactoring
Throw correct exception for delete action
Add hasPermission
Add rating REST service

- Work in progress
Temporary modify delete (for the demo).

- By pass ready_for_deletion status
Remove with for tag fields

- Fix for responsive UI
Hide Test menu (for the demo)
FileUpload requires to check if user is authenticated

- Missing feature (not working FileUpload is using jQuery xhr).
Code refactoring