Improve ⌘V for non-latin keyboards

If the 'v' key doesn't exist on the current keyboard, fall back to using the key that is at the same location on the current keyboard (keycode 9)
move -[QSObject parent] to the QSObject class (From QSBasicObject)
allow viewing hidden files when browsing back, and resolve parents of combined objects
remove an unused lingering var
Merge pull request #1529 from pjrobertson/cmdv

Improve ⌘V for non-latin keyboards
Merge pull request #1493 from pjrobertson/altParent2

Make ⌥← and ← smarter (show parent folder/hidden files and deal with combined objs). Fixes #1286