fix issue #28, school lines not being erased
rename (interim) and button improvements

buttons still don't work
schools map display reflects counts; resembles neighborhood

Should probably consider drawing lines, adding mouseover like Neighborhood.
Rearranged JS a bit.
added a legend and coloring for the neighborhoods map, reset of the line colors is broken.
reorganized a bit to separate var declarations, fns, and post-load code
fixed issue with line mouseover

added whitespace
Merge branch 'refs/heads/sleitner'
move stuff around to put activities post doc load
lines from schools work, but more to do

move some JS functions around to share code
school->nc lines are done

add legend to school page.
improvements to line mouseover.
improvements to info boxes.
closes #5. closes #29.