Connect all selects in forms with a label, if they have one.

## Description

We are using react-select for the `Select` component. It is possible to connect a form label with the select, like any other input.


If I remember correctly this was not possible in previous react-select versions. There are some cases in the web interface where the select is not yet connected with the related label.

Ideally we also update the related queries in tests. Most of these queries are based on the placeholder text.