Incorrect redirection after delete of job in folder in view

If you create a top-level list view v, to which you add a folder d, and add a job j inside the folder, then delete j, you are redirected to /view/v/ rather than /view/v/job/d/ as expected.

This is because in AbstractProject.doDoDelete, req.findAncestorObject(View.class) is v, whose url is view/v/. In this case we would be better served by using the super method's logic (the branch where view == null), since parent.url is view/v/job/d/ which is what we want. The use of view.url is only appropriate in case that view's view group is the same as this job's parent.