Changed colours of peak outlines in preview panel
- Peaks were drawn with a red Qpen, and when zoomed out, it was impossible to see the colour of the inside of the peak, so they all looked red, whether filtered or not.
- Added new method setOutlineColor, and redefined the Qpen to be transparent when filtering, so only the peak centres are visible, in green or red.
Edited by Raza, Zamaan