* Added poc of new email renderer
* Completed email renderer poc for appointment confirmation
* Changed phone description in add-personal-data-form
* Added used email types to new email system
* Switched email templates to the new template engine.
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Co-authored-by: Karl Ludwig Weise <ludwig@ludwigweise.de>
Co-authored-by: Hendrik Belitz <hendrik@innovation-through-understanding.de>
