Store the BBB link in the Pool model

apps/participation/forms.py

@@ -143,7 +143,7 @@ class SolutionForm(forms.ModelForm):
 class PoolForm(forms.ModelForm):
     class Meta:
         model = Pool
-        fields = ('tournament', 'round', 'juries',)
+        fields = ('tournament', 'round', 'bbb_code', 'juries',)
         widgets = {
             "juries": forms.CheckboxSelectMultiple,
         }