CLC-4390: fix two broken tests

There are a couple fixes needed for tests:
* my_dashboard_google_live_updates_spec - now failing because Google altered their Gmail UI slightly. Easy fix.
* authentication_deep_linking_spec - my "fix" in CLC-4375 throws a StaleElementReference error for some reason that I don't understand. Reverting back to the original element reference should fix it.

Both tests now work locally.