in DetailsTable.java
at row 114 insert the following :
if(e.getButton() == 4){
processActionOnRow(0);
}
this makes it so that the back button selects the first item on the list. if you are at the root, it's kinda funny, but it works, as you should pay attension anyways.
bug : you have to hover an item for the click to work. not a big deal though.
you could make an overly complicated method of storing the history, but why?