gtk_widget_set_sensitive (back_button, FALSE);
modest_folder_view_show_non_move_folders (MODEST_FOLDER_VIEW (folder_view), TRUE);
modest_folder_view_set_style (MODEST_FOLDER_VIEW (folder_view), MODEST_FOLDER_VIEW_STYLE_SHOW_ALL);
modest_folder_view_set_filter (MODEST_FOLDER_VIEW (folder_view), MODEST_FOLDER_VIEW_FILTER_HIDE_FOLDERS);
gtk_widget_set_sensitive (back_button, FALSE);
modest_folder_view_show_non_move_folders (MODEST_FOLDER_VIEW (folder_view), TRUE);
modest_folder_view_set_style (MODEST_FOLDER_VIEW (folder_view), MODEST_FOLDER_VIEW_STYLE_SHOW_ALL);
modest_folder_view_set_filter (MODEST_FOLDER_VIEW (folder_view), MODEST_FOLDER_VIEW_FILTER_HIDE_FOLDERS);