More mushrooms...

More help buttons missing in dialogs.

Change-Id: I9274f3774955f5bb8a470e2e1ad25b3f5723d377
Reviewed-on: https://gerrit.libreoffice.org/11217
Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>