only update the transform value if it is not frozen
updated demo to set this value explicitly
clone and modify the transform if frozen
Merge pull request #600 from MahApps/WindowTransitionsEnabled-fix

Bugfix - WindowTransitionsEnabled="False" throws exception if frozen
Fixed System.Windows.Interactivity.dll hintpath, added NET_4_5 symbol to Release config
Merge branch 'master' of https://github.com/MahApps/MahApps.Metro

Conflicts:
	samples/MetroDemo/InteropDemo.xaml