Revert "don't boot user out on 401, log it so we know"

This reverts commit 4d0f523415fbd3696bab003dbed0f6b8f6f3f1aa.

Reverting the change you made for handling 401s as discussed @jh-bate 

@nicolashery since you know the history of this, if you want to quickly look at this PR, that'd be great. Otherwise since I used `git revert` on the change we made a couple days ago, it feels pretty safe, and I will just merge and get the new blip built and deployed in a little while.