Adding note

portal/database/models.py

@@ -875,10 +875,9 @@ class Submission(db.Model, EntityBase):
     def make_change(self, change):
         if self.note is None:
             self.note = {}
-        if 'changes' in self.note:
-            self.note['changes'].append(change)
-        else:
+        if 'changes' not in self.note:
             self.note['changes'] = []
+        self.note['changes'].append(change)
 
     @property
     def changes(self) -> List: