[smshistory] Create org.ofono.SmsHistory API

Signed-off-by: Martti Piirainen <martti.piirainen@oss.tieto.com>
Revert "[doc] Add description of org.ofono.MessageManager.StatusReport"

This reverts commit f8366d1b65d0faf1b093b4e09231d9f64cda732e.
Merge pull request #138 from marttipiirainen/smshistory

Move SMS History (status reports) to a separate API.