You can still choose which forums to show.
In the main forum list, to the far right of each forum section title is a small triangle which you can click to minimize or maximize that section. It may be hard to see, being sort of dark goldish on a dark blue background, but if you select / highlight the entire page (ctrl-a), it should be clearly visible. Alternately, just move you mouse over that area until the cursor changes it indicate something clickable.
