Macos: File and folder aliases are not working as intended

[ChangeMe9000]

An alias is a shortcut to a folder or file, which is handled by the os.

1. Viewer: XnView tries to display folder aliases as images, thus they show up as black (empty) images (especially apparent when you have a slideshow in a folder where there exists one or more file or folder aliases)
2. Browser: XnView treats folder aliases as files, so they can't be used to go to the target directory.

Idk how easy it is to implement them in the browser, but a quick fix for the viewer would be to omit aliases.