Provide "Debate" as top level menu item

We are trying to engage our members in general debates that exist outside of participatory processes and so would love to have a "Debate" page as the first, top level item in the navigation bar.

By coincidence, we noticed that this is exactly how Consul structured their navigation: https://demo.consulproject.org/

On a similar note, it could be interesting to have a 'chat' top level tab, similar to what these guys have done: https://codefor.fr/