image adjustments
auto adjust speed-up
anti-aliasing for monochrome images - alpha channel removed when saving images (that don't use it)
three zoom options added
temp file switchted to date-time
saving gradients
run button added - delete gradients added
kleine anpassungen (0.5h)
thumbnail animations optimized
fine tuning, bugfix in toolbar
Merge branch 'master' into print-button

Conflicts:
	ImageLounge/src/DkViewPort.cpp
	ImageLounge/src/DkWidgets.cpp
	ImageLounge/src/nomacs.rc
fixes and adjustment
initial zoom level fixed
confirm dialog for qrcode (2h)