Superuser issues

[magnesj]

This is an overview of issues discussed with Alireza 2022-05-06

• [ ] allow vector short name to be used in top level plot heading
• [ ] when having axis on both left and right, add a separation line between plots to easily see where the next plot starts
• [ ] auto appearance does not work for plots with multiple axis
• [ ] when appending curve, duplicate curve style and set new color (include area fill)
• [ ] automated range computations does not work for stacked curves
• [ ] add stacked curve control to plot
• [ ] drag/drop well onto title of main plot -> append curves to plots
• [ ] center plot label on subplots based on grid excluding axis widgets

Other related fixed Issues are described in #8890