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

The ComboBox is now generic (both in the sense of TypeScript generics as
well as use in other areas as the show selector). It’s behaviour now
also aligns with te TagInput component.

refs #146

refs #121

refs #155 #156

Duration strings may return an awkward format if the seconds it is
calculated from were fractional. A single second is the maximum
precision we want for a duration string so we can simply round them in
order to avoid such cases.

refs #155

refs #127