2010-09-15  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* dialog-sheet-order.c (cb_color_changed_fore): handle multiple
	  selection
	(cb_color_changed_back): ditto
	(cb_selection_changed): ditto
	(cb_delete_clicked): ditto
	(create_sheet_list): allow multiple selection
	(cb_item_move): gtk_tree_selection_get_selected is now unusable
	(cb_add_clicked): ditto
	(cb_duplicate_clicked): ditto