implement "no auth" path for offline

[jeffmcaffer]

the new GitHub auth story is slick but requires you to be online for much of the system to work. For example, you can't call the api or use the website effectively without being online. Even if online, if your net connection is slow (e.g, on an airplane over the atlantic) it can be unpredictable.

Propose that for localhost setups we allow "no auth" (perhaps the default?). That would trickle down into the team etc that we'll use for permissions. Those operations that truly need auth will necessarily have to be online so we should be good.

[jeffmcaffer]

@jpeddicord this might be a good thing to think about as you look at more of the permissions/auth topics