remember iso image on iso mount disabled

[Maciej Pilichowski]

The iso image is not remembered which makes switching it on/off more tiresome than it could be.

Steps: start VB select guest -> properties iso image mount ON select image Ok quit VB

start VB iso image mount OFF ok quit VB

start VB iso image mount ON at this point the selected previously iso image should be mounted, but it is not

Ok, the bottom line is switching on/off the mount iso image in the guest properties should only do this -- mount off or not. It should not change the selected image.