Tikibar should be able to work cross-domain

[phildini]

If multiple domains are being powered by the same Django app, and if tikibar is enabled on one domain, it should show up on other domains.

The use case right now is, if you have a main domain and an API browser domain, tikibar being enabled on the main domain should show it on the API browser domain.

This used to work, but doesn't now. The cookie is being set correctly on the API domain, but Tikibar isn't showing up.

Digging into the "should show tikibar" code may reveal the answer.