Fixed bug #2786: Loop edges are rendered again

git-svn-id: http://chianti.ucsd.edu/svn@31181 0ecc0d97-ab19-0410-9704-bfe1a75892f5
Updates to bar charts to support assembly project


git-svn-id: http://chianti.ucsd.edu/svn@31182 0ecc0d97-ab19-0410-9704-bfe1a75892f5