Start using gtk menu in windows
Display device info
All windows as childs of Window class
Using a 2column layout for all windows
fix a bug about virt-what and not being root

plus, there is very little refactoring, according to pep8 + pyflakes
Merged all windows

Conflicts:
	freepto-live-tray
Cleaning code
Moved virtualized warning into the absentWidget
Device infos in table
Using 'password mode' in passphrase input
Show about dialog
Put VirtualizedWarning into InfoBar
Moved 'create persistence' button into form widget
FIX green icon never appearing
Refresh action also refresh helper widget
Autoshow MountedWidget and LiveWidget
Moved VirtualizedWarning on top of window
Adding reboot button in live mode
Fixed reboot button click
Fixed reboot action