move more common code from dock widgets into octave-dock-widget.h * terminal-dock-widget.cc, file-editor.cc, files-dock-widget.cc, workspace-view.cc (constructor): remove connectiong changed_settings signal * files-dock-widget.cc/.h, file-editor.h: do not include QSettings here * octave-dock-widget.h(constructor): connect changed_settings signal * octave-dock-widget.h: include QSettings, empty virtual slot notice-settings

((nil .
      ((c-file-style . "gnu")
       (indent-tabs-mode . nil)
       (fill-column . 72)
       (eval . (when (string-match "\\.h\\'" (buffer-file-name))
                 (unless (string-match "/gnulib/" (buffer-file-name))
                   (c++-mode)
                   (c-set-style "gnu"))))))
 (change-log-mode . ((indent-tabs-mode . t)))
 (makefile-mode . ((indent-tabs-mode . t))))