Resolve "Create new Model FeedbackLine and integrate it"

Closes #67 (closed)

core/models.py

@@ -541,7 +541,7 @@ class Feedback(models.Model):
             Q(of_tutor=user), Q(status=Feedback.EDITABLE),
         )
         return tutor_feedback[0] if tutor_feedback else None
-    
+
     @classmethod
     def tutor_assigned_feedback(cls, user: Union[Tutor, Reviewer]):
         """Gets all feedback that is assigned to the tutor including