Fix display of module selection toolbar on limited vertical space
Currently the module selection toolbar shown on the left hand side of the application does not handle being displayed on a screen with insufficient vertical space: some of the bottom icons disappear off the bottom of the screen. The bottom toolbar section can be undocked and separated from the main toolbar to attempt to access missing icons, but this is messy, not least because tooltips are then not displayed properly.
Modifying the toolbar will require modification of the WorkBench class, which is located in pickcells-container in the pickcells-essentials repo. In particular it will require modifying how the toolbar is implemented using the Weblaf library.
Simplest proposed solution is to implement a scrolling functionality within the toolbar.