refs #185

refs #185

Bootstrap only displays form group errors if the .invalid-feedback
element is preceded by a .is-invalid element. That is an uncessary
restriction and we can simply enforce the errors to be displayed if it
is rendered.

refs #181

Pinia store destructuring doesn’t work on the plain store object. One
has to use storeToRefs or keep the original store object.

see: https://pinia.vuejs.org/core-concepts/

internal note and show owners are both admin-controlled.

refs #146

refs #146

This way we can use the existing server error handling infrastructure
from the newer fetch-based API implementations.

Django rest framework would sometimes return objects like this

  { "email": ["Gib eine gültige E-Mail Adresse an."] }

which we didn’t properly handle.

refs #146

refs #127