You can specify another integer value for bars

The value will be summed up for bar chart display. No other ggregation
method is supported currently.
You can specify default bar chart width using barChartWidth config
option.
Non-clickable rows are grayed out (rather than unselected columns)
categoryTextWidth config option only sets category width from now on
(does not incude the numeric value)
Data source & info shown on chart title column
Default categoryTextWidth updated to 107

All demos are updated accordingly.