Scrolling neighborhood count box

[matikin9]

As we add haikus for more neighborhoods (yay) that count box is going to get really long. We should limit the height and add a scrollbar for overflow (styled to match the semi-transparent look of the box).

[michaelkirk]

Good idea.

Potential snag: The map overlay is inside of the map object, so the scroll event is hijacked by the map zoom feature. We might have to move the overlay out of the map container and restyle accordingly.