In info.magnolia.ui.model.field.definition.FieldDefinition we have a property 'type' that is the type the property should have in the JCR. The CheckboxField should respect this property and support saving as both String and Boolean.

When saved as a string it should save the strings 'true' and 'false'.

Accepted values should also include for instance 'True' and 'TRUE' as implemented in Boolean.parseBoolean().

When implemented this should replace EnabledField in Security app.