Put 'Common Plots' option into Waveform Graph Properties

[AirFrantz]

I've noticed that the only way to access these 'common plot' types is through the plot legend:

I think these should be available in the Waveform Graph Properties under the Plot tab.  If you did not know that this 'common plot' option was available under the legend and you wanted to modify your plot, this would be the obvious place that a user would go to look first.