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 * Send query signals directly to the engine (not over mainwidget)
 * Add Metamodifier for actions
 * Finally implement a proper layout, reduces flickering
 * Implement a propoer delegate, which stylable by qss
 * Let the delegates be instanciated by keypress (instead of querying
keyboard modifiers in the paint event handler)
Dont search for Hicolor icon theme explicitely (see freedesktop icon
specs)
Minor changes