improved ui for group creation

Author: IdirLISN

src/apps/competitions/models.py

@@ -60,7 +60,6 @@ class Competition(models.Model):
         blank=True,
         related_name='competitions',
         verbose_name="group of participants",
-        on_delete=models.CASCADE,
         help_text="Competition owner being able to create groups of users."
     )