Checked that all the JSON Fields are meaning ful

* No particular action wad required
* Simply added some comments when no validators are present

Fixes #113

backend/backend_app/models/exchange.py

@@ -26,6 +26,7 @@ class Exchange(BaseModel):
     utc_allow_courses = models.BooleanField()
     utc_allow_login = models.BooleanField()
 
+    # No specific validation of the JSON is required here
     courses = JSONField(null=True)  # Store data from ENT
 
 

backend/backend_app/models/pendingModeration.py

@@ -26,6 +26,8 @@ class PendingModeration(BaseModel):
     updated_on = models.DateTimeField(null=True)
 
     # Object pending moderation
+    # No validation of the JSON it's used internally only and the data is
+    # validated before arriving here.
     new_object = JSONField(default=dict)
 
     class Meta: