Vector icons
Changes:
- Support for SVG icons. Many iconpackages are distributed as vector graphics. Those files can now be used as starter icons
- The starter icon will be permanently used as application image. This looks nicer, as they can be of higher quality than the small application icons used otherwise. Tasks (icons that are no starters) still refresh their icon.
- Middle click on an icon starts a new instance of the corresponding problem. This fixes a regression blocking that function.
- It is now easier to middle click on an icon without accidentally moving the simdock frame instead, reusing the same movement detection logic to make left clicks on icons easier.
- Fix: The launcher dialog for new launchers complained about a missing image for the icon selector.