Changes to Undo/Redo in regard to ProgressIndicator

Changes to Undo/Redo in regard to ProgressIndicator

    It was not important to know where the operation was
    executed, it is important where undo/redo was clicked
    and this solely indicates where the progress should be
    shown.
    Now undo/redo get the MainWindow and can pass that to
    ProgressIndicator.
    I'm about to revive m_progressIndicator again

svn path=/trunk/playground/utils/dolphin/; revision=609020