Changes

''A [http://developer.gnome.org/gtk/2.24/GtkLabel.html GtkLabel]'' '''with mnemonic support''' will automaticaly generate accessibility keys on linked ''[http://developer.gnome.org/gtk/2.24/GtkEntry.html GtkEntry]'' and ''UndoableEntry'' fields. Remember that Gramps also uses custom widgets like ''StyledTextEditor'' and ''ValidatableMaskedEntry'', which do not always have relation with a ''GtkLabel''. In this case, we need to set a relation.