Code review comment for lp:~brian-murray/launchpad/limited-subscriptions-page

Thanks for fixing the things I'd reported, Brian. The only remaining issue I see is the 'Cancel' link on +subscribe which still sends me to the bug's page, but that might be a bug on ReturnToReferrerMixin or just an oversight on your side. If it's the former, it's fine to just file a bug, but if it's the latter it should be trivial to fix.