[Tournaments] Beamer view of upcoming fight should self-update

[Zomtir]

This is the most annoying limitation of our current program, that changes are not pushed to the beamer view automatically, but have to be requested manually.

Partly related to #124 because the beamer view is displaying the queue most likely is some form.

Just making sure this is a dedicated issue because it is so important.

[Gustl22]

This is already deeply integrated and every UI should update automatically. 😁