/project-group/member-project should redirect to /member-project or vice-versa

[Gavin Panella]

https://edge.launchpad.net/launchpad-project/malone shows the same as https://edge.launchpad.net/launchpad-project/malone with the exception that the page title and breadcrumbs differ. We should kill one of these and redirect to the other.

[Curtis Hovey (sinzui)]

No page makes URLs with the project under the project group. Google does not know of any such URLs.

There is one code point to change. It shoule read:

ProjectNavigation.traverse
...
    return self.redirectSubTree(canonical_url(self.context.getProduct(name)))

There is no explict tests that say a project should appear under a projectgroup but it is implicitly shown in
    xx-project-add-product.txt
The test can be fixed to use the correct URL

A good unit test will use test_branchtraversal as guide (.assertRedirects, .tranverse)