convert to Nico's design
add NVD3 for horizontal bar chart
reference NVD3 in index.html
workaround for missing isTouchDevice() function needed by Autodesk's viewer3D.js
Merge branch 'clarence-design' into clarence-barchart
avoid interactions between D3 and NVD3 CSS
display bar chart as an example
move style info to css file from html file
add vertical scroll bar for charts
fix bug preventing new models from being loaded