Match access configuration of course publish wizard to new style

In the course editor the manual publish wizard uses the old drop down for the publish configuration of the course.

We redesigned this publish settings in the course -> acccess configuration some time ago but forgot to refactor this also in the publish wizard.

Note that the publish wizard only collects the data to be changed. Thus, it is unclear if the access config form can be used directly, maybe it must be duplicated to work on mocked data rather than the resource itself. Data are persisted only when the wizard is finished.