old_contents: """
  Register the models, which are editable in the Admininterface
  """
  from django.contrib import admin
  from .models import Visualization, VisualizationInDomain, HistoricalEventsInVisualizations, DatasetsInVisualizations
  
  admin.site.register(Visualization)
  admin.site.register(VisualizationInDomain)
  admin.site.register(HistoricalEventsInVisualizations)
  admin.site.register(DatasetsInVisualizations)
new_contents: """
  Register the models, which are editable in the Admininterface
  """
  from django.contrib import admin
  from .models import Visualization, VisualizationInDomain, HistoricalEventsInVisualizations, DatasetsInVisualizations
  
  admin.site.register(Visualization)
  admin.site.register(VisualizationInDomain)
  admin.site.register(HistoricalEventsInVisualizations)
  admin.site.register(DatasetsInVisualizations)
  
subject: add visualisation models into the Django admin