Code review comment for lp://staging/~tintou/noise/fix-interface

Hrm, I'm not sure I like removing the close button from the bottom right of dialogs. I think this creates an inconsistency since gtk.dialog retains the explicit buttons, but removes the close window decoration instead. I would agree that it's better to retain the label button since it an give a more explicit explanation of what closing the dialog does (maybe not applicable in this particular dialog, but in the scheme of platform consistency it is important in other dialogs).

I think we should:
1. revert the window decoration/close button situation in the prefs dialog
2. consider adding a "Cancel" button to the media editor and use the standard gtk dialog without a window decoration.