2008-02-04 Marcus Brinkmann <marcus@g10code.de>

• confdialog.c (dialog_level): New global variable.

(comp_has_options, group_has_options): New functions.
(create_dialog_tabs_2): Skip groups with no displayable options.
Honor expert level.
(dialog_level_chooser_cb): New function.
(create_dialog): Add some padding, a label and combo box for
choosing the current expert level.