It isn't immediately obvious when to close the window, other clients
(e.g. Element Web) has a "Got It" button in addition to the regular
dialog close button.
This should allow the devices page to hide the "Verify this Device"
warning, once you actually complete verification. I also made sure to
update the other consumer - the menu item under the user menu.
Additionally, I also fixed the password field not being automatically
focused when trying to remove a device.
We were specifically missing WAITINGFORKEY and WAITINGFORACCEPT, which
does happen and could be delayed - resulting in a blank screen for a few
seconds.
CCBUG: 508483
