AllPlot Stacked by Series

Extending the stack display to have a single plot for each
data series. This will be useful when comparing activities
and also makes it a bit easier to see the data when there
are lots of data series.

This is a checkpoint commit as I need to fixup some of the
series that have multiple curves and also reference lines
are not currently working.

But you can zoom using the fullplot and highlight intervals
etc.