removed d3.v2 to avoid version clashes
leaflet+d3js tests (not functional)
update NVD3 to latest; remove obsolete D3v2
latest dataset
initial sector groups page
removed d3.fisheye (avoid NVD3 going all zoom-happy)
latest dataset (includes sector percentages)
added tabs for other sector groups
generating scatter plots for remaining sector groups
recompiled assets
updated navmenu
renamed source file
added placeholder SVG elements for pie charts
updated dataset
return to three pie charts
add function to create pie chart data
add pie chart visualization
updated layouts, moved metromonitor styles to own stylesheet
invoke pie chart functions on UI interactions
recompiled assets