sick button removal
sick button removal

The decorator may show an orphan rectangle around the bottom-left corner
in case the theme doesn't really need it.  Get rid of it.

 * decorators/mdecorator/mdecoratorwindow.cpp (MDecoratorWindow::MDecoratorWindow):
   Check the theme and don't create an MEscapeButtonPanel() unless
   the theme explicitly asks for it.
 * MDecoratorWindow::setOnlyStatusbar(), MDecoratorWindow::setInputRegion():
   Handle escapeButtonPanel == NULL.

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