Refs #8187: subrecord button new/edit/delete customizeable per record and/or row.

Carsten Roserequested to merge
F8187Subrecord_PerRowEditDelete into develop

Refs #8187: WIP Link Typ 'delete' - TODO: 'D' und 'x' vermutlich zu einem Typ mergen. 'TOKEN_ACTION_DELETE_AJAX' implementieren.

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