Warning for empty fields is not consistent

[nikolahoff]

Describe the Bug

we have 2 different versions how mandatory fields are shown to the user.

Steps to Reproduce

1. Right error message

1. Go to 'Kontakte - neuen Ort erstellen'
2. Click on 'veröffentlichen'
3. the field is highlighted which is empty but needs to be filled out (screenshot 1)

2. wrong error message

1. Got to Kontakte - Ort verknüpfen - Kontaktdaten verwalten
2. click on "erstellen"
3. missing fields are not highlighted. Instead an error message on top of the screen appears showing which fields are missing. (screenshot 2)

Accepted behaviour should be:

version1: Error message right next to the field (screenshot 1)

Also in the designfile see the indication for missing fields here

[nikolahoff]

I still think we should show which are the mandatory fields like in the design. For the user it's not a nice experience to get error messages. So it would be better to know beforehand which fields need input. @osmers