In the Google Login widget, change the non-signed in buttons from "Add Account" and "Sign Out" to a single "Sign in..." button

Change-Id: Ifc64399f3d964e6bb1ca3fad55e285f1bd55e225
Merge "In the Google Login widget, change the non-signed in buttons from "Add Account" and "Sign Out" to a single "Sign in..." button" into idea133