AllPlot: in Stacked View = yes / By Series = no - Curves missing

... NP, AP, XP and TE, PS curve are not shown as indicated by "Checked"

when changing between rides, "Checked" settings are ignored
Merge pull request #1089 from Joern-R/pull2

AllPlot: Some Curves missing - when "Stacked View" = "X" / "By Series" = " "