Remove xfail

<strong>Note:</strong> <a href="https://github.com/mozilla/mozillians-tests/pull/76">pull/76</a> should be merged first.

This pull does several things:
* importantly, removes an xfail. Yay for coverage
* removes a testcase that is <i>no longer valid</i>, <code>/ru/u/MozilliansUser/</code>
* moves the <code>dir list</code> into <code>test_302_redirect_for_anonymous_users()</code>
* fixes an eyesore spelling error that I'm sure would make @stephendonner's eyes cry