then one must log out, then log back in, otherwise the menu doesn't show
Not required. Just restart and refresh the page after the restart is complete.
I'm trying to customize persona theme to show the last three posts per category.
I'm having a hard time trying to find a way to do this, can anyone shed some light?
I guess I should be working with hooks, but I need some guidance, can't seem to find what I need in the docs.