makes the map not draggable after clicking on a pin

refs SPOT-412

the map no longer drags when clicking on a marker, but it will still
drag if clicked on a cluster of markers. however, jon said the marker
clustering is being redone and that it should be fine with just the
individual pins being non-draggable.
Merge branch 'craig'
Merge branch 'craig'
Merge branch 'craig'

Conflicts:
	static/js/search.js
didnt finish a merge conflict and accidentally committed it.
Merge branch 'craig'
Merge branch 'craig'
Merge branch 'master' into uiuc_merge