Left Panel Scrollbar Improvement

todo: just can't yet get the dynamically generated elements to scroll
properly.  for now, just using a border and a height of 70% of the page
to try and avoid the behavior of having the description area overflow
past the page bottom.
Merge pull request #32 from sam-berg/work1

Left Panel Scrollbar Improvement
Merge pull request #33 from sam-berg/foodtrucksurvey

Scrollbar work.