Fixed the duplicate slots view.
The script would not clear the screen upon recalculation also the list of duplicates would increase with every iteration because the variables weren't properly reset.
Patch by: Merio Ferraro, Lennard de Rijk
Reviewed by: to-be-reviewed
"""
Create a superuser from the command line. Deprecated; use manage.py
createsuperuser instead.
"""
if __name__ == "__main__":
from django.core.management import call_command
call_command("createsuperuser")