Minor Enhancements for Plot Selection

[raulod]

I like to suggest the following enhancements

1. Select/Unselect All Plots
   Add an option to easily select or unselect all plots at once. This will allow users to start with all plots unselected and then add only the specific charts they need.

2. Improved Indicator for Disabled Plots
   Currently, disabled plot names are struck through, which makes them harder to read. I instead suggest greying them out or use another visual indicator that maintains readability.

[raulod]

Also, selection/removal of plots should apply to all plots. Currently, the selection needs to be repeated for all the plots.