The fix works as follows: until now the method Knob::drawKnob has used
hard coded palette colors to draw the knob lines for the different knob
types. These palette colors are now assigned to the line color property
in Knob::initUi. The method Knob::drawKnob in turn now uses the line
color property for almost all knob types. This means that all knobs
lines will be painted in the same color as before unless that property
is overridden by the stylesheet.
Also removes an unnecessary typedef from QWidget to trackSettingsWidget
in Track.h.
Removes the knob image knob04.png. This knob corresponded to
knobGreen_17 which was not used anywhere in the code. To be able to
remove the enum value it was necessary to change the knob loading code
in Knob::onKnobNumUpdated. However, the changed implementation is more
explicit and therefore likely better to understand.
Michael Gregorius