Update bar chart from feedback.
Update bar chart from feedback.

Allow per-bar coloring. Display bars in specified order (l->r == E->W)
Only display desired sites, skip others.

GENI-NSF/geni-demoviz,GENI-NSF/geni-demoviz,GENI-NSF/geni-demoviz,GENI-NSF/geni-demoviz