YafaRay Plug-in - reviewing for Yafaray 3.0

[micheus]

In fact, I think it's best to do this in the new YafaRay plugin preferences:
* Set the path to yafaray-xml (the one in v3.0.2-beta)
* You can leave the plugins path empty, as YafaRay v3.0.2 should be able to find them automatically (but make sure it's empty and no space marks are there!)
* You can leave the options field empty as well. YafaRay v3.0.2 should just work.

Wouldn't be better remove this field from the Plugin Preferences?

David, about that "Custom Icon" for badge: which type of images are accepted?
I'm adding the passes to preferences and other minor layout review. In this case, adding a button for select the image path.