Remove dead code.
Fix stupid error in util.objWrap

When I originally wrote `objWrap`, I think I had some different use case
in mind. What we mainly use it for here is building up '$or' queries, so
I've fixed it to work for that use case and added a test for it.
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Merge pull request #218 from mozilla/216-multi-auth-multi-pass

Fix problem with issuer admins not seeing all badges