Increase top margin of map

On mobile devices the top navbar takes up more space so the default
so the controls need to be pushed down further so they do not overlap.
Change margin of explore button

The rows are a different height on mobile devices, without
removing the margin the explore buttons end up being non-centered
on the row.
Add toggle for map visibility

Unless we also change the visibiliity of the map, when a user
gets more info on the a particular school (accordion drops down)
the background is the map instead of white.
Remove link that does not go anywhere
Close div on accordions for locationList