#9727: slider has full range
In this merge request the slider interactions are the given full range of the slider trough.
Currently, clicking on the number area causes the numerical entry to take focus.
This means that casually dragging near the top end of a slider won't drag and slide.
This means that you can't make small changes to a sliders position in the top end, you have to select lower down and slide back up.
This merge changes the slider so that double clicking a slider activates the number input.
Or the user can middle-mouse click for number input.
After:
double-click-number
Before:
number-ended