GUI: Fix unpacking twice in same dir
GUI: Fix unpacking twice in same dir

The RunTab UI wouldn't update because the directory didn't change, even
though it was created in the meantime. Always refresh when getting the
signal.

ViDA-NYU/reprozip,ViDA-NYU/reprozip,ViDA-NYU/reprozip,ViDA-NYU/reprozip,ViDA-NYU/reprozip