Fixed button on the forum

Proyecto:Web
Componente:Foro
Categoría:petición de característica
Prioridad:normal
Asignado:No asignado
Estado:active
Descripción

As we can't edit the first post after a discution, it would be great to have a "Fixed" button to tel that the problem was solved and that would add "Fixed" in the title in a way or another.
I saw that in debian-fr.org forum, it adds this image: before the title.