Author archives queries should return a 404 when the user isn't a member of the blog
|Reported by:||yoavf||Owned by:|
On a multi site install, querying for the author page for a user that is not a member of that blog, still returns a valid page, instead of a 404.
User crazygeorge is a member of of blog1 but not a member of blog2
The url http://example.com/blog2/author/crazygeorge/ will return the author template with a no posts found message.
Insead, we should ignore users that are not member of a specific blog, and return a proper 404.