2/10/14 horizontally center major tick labels in log graph
2/10/14 make linear and log graph scales wider, so we can use a larger tick font in linear
fill linear graph scale with gray RGB(230,230,230), which is roughly the fill at the the midpoint of the log scale
fill linear graph scale with gray RGB(230,230,230), which is roughly the fill at the the midpoint of the log scale
apply 'Reset All' to the graphs
fixed bug in scenery-phet.NumberPicker that was causing multiple timers to be created, giving the appearance of being stuck, most noticeable on iPad