NXP-12007: allow definining default property values on the widget type configuration
NXP-12449: set the type category on widget and widget definition
NXP-12449: fix typo on type category descriptor
NXP-11142: fallback on properties when link is not set, to ease up documentation of the action properties
NXP-11142: fallback on properties when confirm is not set, to ease up documentation of the action properties
NXP-11142: also fallback on properties for action label, help, icon and accessKey