Bug 1018321 - Create url to one and done profile page based on username or name

I think the mixin's logic is better than or as good as just punting them to the homepage; if the user has an account and is trying to view their profile page and isn't logged in, we let them know "Hey, please login and then you can see your profile page.". That's a better user experience than just seeing the homepage without any idea why you couldn't go to your profile page.