New Add Class Field for v.2

pbone3b → closed merge request !5

This all seems to be fine, tested in gitpod.
Can someone help me with the merge request, I'm kind of a noob contributing.
Thx!

This patch adds a CSS Class field.

pbone3b → closed merge request !6

Hi @pbone3b, there is a problem, your patch will help us with people with fresh installation. what happen people already using this module ?

I think work has to be done on the hook update for the new field? I tried working in it but couldn’t get it to work