"Issue 723: Make navigation strip work for smaller screen sizes"

Weirdly, this seems to have made the navigation strip not work for my desktop computer. I'm just getting a thin dark stripe at the top, but none of the menu bits are visible. I tried hovering on the off chance it would expand, but no (but that's probably not news to you).

Screenshot

Meanwhile - that's a lot of stuff. Mostly tidying up behind the couch where I never look. You all rock.