Sliders with unit tests
Merge branch 'origin/547-SliderBric'

Conflicts:
	EnergyParabola.html
Adding total population count
Update checkgroup to match layout and css for radiogroup
Measure axis labels
* prototype axes measure labels then use that size to create foreign objects and set offsets from the data area. This has fixed a host of ills, although still doesn't handle case of top or right axes quite correctly, nor wide values on x ticks
* updated neff sims now that graphs lay out better
* updated bar chart to layout bars a little differently - still a bug in NeffEnergyCompare that doesn't layout grouped barcharts correctly when updating dynamically
* added question to fakeactivitydb.