SVG image format added to supported image format list.
SVG is supported in two ways:
- If an SVG image is displayed to an IMAGE field (or static IMAGE),
an SVG renderer is used. If the widget is resized (according to STRETCH
and AUTOSCALE attributes), the image is resized without resize artifacts.
- On other items, as they can't be resized, the SVG image is used
as a pixmap, as well as all other image formats.