old_contents: from django.core.signals import Signal
  
  process_completed = Signal(providing_args=['result_text', 'result_data', 'files', 'profile','logs'])
  process_aborted = Signal(providing_args=['error_text','result_data','profile','logs'])
  
new_contents: from django.core.signals import Signal
  
  process_finished = Signal(providing_args=['result_text', 'result_data', 'files', 'profile','logs'])
  process_aborted = Signal(providing_args=['error_text','result_data','profile','logs'])
  
subject: Add a little doc and callbacks