A full feature toolbar style widget in a sidebar fashion. It contains toolbuttons that can be grouped into multiple sidebars
controlled by activation buttons at the top and/or bottom of the sidebar. The icons size and text position can be changed via popup context menus.
This widget is tied to the KDE environment for the "Default" desktop icon size. The widget width is calculated based on the fontmetrics of the
text and the width is recalculated when fonts are changed in the KDE control center.