* AccountCheckSettingsFragment now supports AutoDiscover
* Clean up callbacks for account check & autodiscover errors
* AccountSetupExchange now supports rotation
* Remove dead code in SetupData & AccountSetupBasics
TODO next CL: Remove all edit flows from setup activities
TODO next CL: Remove old CheckSettings activity
Change-Id: I3c9884856ca6e70226374fdb28400bfb3588387e