This is done because the current column-left and column-right were
actually just floating left and right and making use of float-left
and float-right makes more sense. This also helps with the upcoming
public archives feature which will try to include portico content
with main app content.
This creates a dropdown in place of the normal register/login links
you get when logged out, with an option to go to the app or log out if
that appears you click on the avatar.
A bit more work is needed to make this look really good, but it's a
great start.