On insert/update of an account the updated Account instance was
returned. However on insert/update of an account not only account
properties can be set, but also external IDs, watched projectis and
general preferences. To be consistent we should rather return the
updated AccountState which includes external IDs, watched projects and
general preferences in addition to the account.
Change-Id: Iff30984fe39551f88480399b57ce9cb3a90a10e2
Signed-off-by: Edwin Kempin <ekempin@google.com>