Unique check model methods done

And remove the uniqueor option

Signed-off-by: Tim Smart <tim@fostle.com>
Remove unique OR checkbox from mapper template

It is not used anymore in the backend.

Signed-off-by: Tim Smart <tim@fostle.com>
Clean up uniqueness and validation

To get the expected behaviour.

Signed-off-by: Tim Smart <tim@fostle.com>
Add insert query methods

Additionally use them in the controller.

Signed-off-by: Tim Smart <tim@fostle.com>