[#69449916] Removes raw queries from data-set form
[#69449916] Removes raw queries from data-set form

- Uses `editable=False` flag at the model level.
- This will mean all data-sets will default to `True`, and will not be modifiable via the admin interface.

alphagov/stagecraft,alphagov/stagecraft,alphagov/stagecraft,alphagov/stagecraft