Comment 7 for bug 485318

https://lp-oops.canonical.com/oops/?oopsid=OOPS-0c0c5ff94cf9fa35380bbe42e07c9530

POSTToNonCanonicalURL:

    Traceback (most recent call last):
  Module zope.publisher.publish, line 131, in publish
    obj = request.traverse(obj)
  Module zope.publisher.browser, line 542, in traverse
    ob = super(BrowserRequest, self).traverse(obj)
  Module zope.publisher.http, line 455, in traverse
    ob = super(HTTPRequest, self).traverse(obj)
  Module zope.publisher.base, line 261, in traverse
    obj = publication.traverseName(self, obj, entry_name)
  Module zope.app.publication.zopepublication, line 197, in traverseName
    ob2 = adapter.publishTraverse(request, nm)
  Module lp.app.browser.launchpad, line 819, in publishTraverse
    return Navigation.publishTraverse(self, request, name)
  Module lp.services.webapp.publisher, line 854, in publishTraverse
    nextobj = self._publishTraverse(request, name)
  Module lp.services.webapp.publisher, line 1008, in _publishTraverse
    nextobj = self.traverse(name)
  Module lp.app.browser.launchpad, line 761, in traverse
    raise POSTToNonCanonicalURL
POSTToNonCanonicalURL