Team name don't need to be uppercase

apps/participation/forms.py

@@ -20,7 +20,7 @@ class TeamForm(forms.ModelForm):
     """
     def clean_name(self):
         if "name" in self.cleaned_data:
-            name = self.cleaned_data["name"].upper()
+            name = self.cleaned_data["name"]
             if not self.instance.pk and Team.objects.filter(name=name).exists():
                 raise ValidationError(_("This name is already used."))
             return name