small change. thinner bars.
Merge branch 'thin-bars'
Fixed bug in the number display for the "no" label.
Merge branch 'bug-fix-noLabel'
Code organization

Modularized a lot of the renderHisto function into separate render
functions. Ended up with more globals. Usually not great idea but
probably better in this case
Commenting, organizing, formatting, horizontal scale changes
Merge branch 'curve-segment-transparencies'
Added points render function, formatting, font tweaks
Added function to display percentage 'productive' time.

This is different from the abs(plus/minus) display of productive v
non-productive time. Intent is to show what percentage of time spent in
a given interval (histogram bucket) is productive.
Its a bit confusing that the line rendered as it is right now overlaps
the bar chart/points/lines but that can be fixed (additional axis?
should be something more elegant).
Added comments to explain how the JSON parsing is working