QskSlider + mouse clicks

[uwerat]

When pressing the mouse on the slider scale/groove - not on the handle - we have two different implementations:

• QSlider ( Widgets )
  the value is in/decreased by the page size. When keeping the mouse pressed ( = long press ) the value jumps to the mouse position
• Qml/Slider
  the click immediately jumps to the mouse position

The current implementation of QskSlider increments the value on mouse release by the page size - not matching any of the options above. As a first step we want to have the QML/Slider implementation. - maybe implementing the QSlider mouse handling as an additional option.

[uwerat]

The QML/Slider mouse handling is implemented.
I leave this issue open because of the QSlider option - however not for the 0.0.x milestone.