I have created a property with PropertyList based on this example: http://world.episerver.com/blogs/Per-Magne-Skuseth/Dates/2015/11/trying-out-propertylistt/
It works very well and does everything I want, except to sort the list by using drag and drop. Is this possible?
I think that for now you have to use "Move up" and "Move down" menu commands.
Ok, thanks Grzegorz! Hopefully this will be fixed in a future release :)