UI: Ignore wheelEvent for properties

Ignore wheelEvent using subclass
slider,spinbox,combobox with eventhandlers:
wheelEvent - ignore if widget is not focused,
leaveEvent - clear focus when mouse leaves event.

Use these new subclass widgets in properties
to ignore wheelEvent when scrolling.

UI/double-slider.hpp

@@ -1,8 +1,9 @@
 #pragma once
 
 #include <QSlider>
+#include "slider-ignorewheel.hpp"
 
-class DoubleSlider : public QSlider {
+class DoubleSlider : public SliderIgnoreScroll {
 	Q_OBJECT
 
 	double minVal, maxVal, minStep;