Link to bitbucket user broken on "Username aliases" when using own domain CNAME (BB-2828)

Hi,
Tiny issue with a link to bitbucket user.

• Given I'm on my "Username Aliases" page (http://code.hoborglabs.com/hoborg-commons/admin/committers)
• When I click on my user link (http://code.hoborglabs.com/hoborglabs)
• Then I should go to code.hoborglabs.com
• And I should not see 404 page