Changes following review:

- Check if right keys in new history rows
- Improve model and get rid of old revision version
- Add updated migration file
- Test data when inserting into inbound sms history

app/models.py

@@ -1901,9 +1901,9 @@ class InboundSms(db.Model):
 class InboundSmsHistory(db.Model, HistoryModel):
     __tablename__ = 'inbound_sms_history'
     id = db.Column(UUID(as_uuid=True), primary_key=True)
-    created_at = db.Column(db.DateTime, nullable=False)
+    created_at = db.Column(db.DateTime, index=True, unique=False, nullable=False)
     service_id = db.Column(UUID(as_uuid=True), db.ForeignKey('services.id'), index=True, unique=False)
-    service = db.relationship('Service', backref='inbound_sms_history')  # what does this one do?
+    service = db.relationship('Service')
     notify_number = db.Column(db.String, nullable=False)
     provider_date = db.Column(db.DateTime)
     provider_reference = db.Column(db.String)