Bug 921050 - Send email in the background. (Part 1/2)
Bug 921050 - Send email in the background, Part 2: clean up save behaviour, tests in general, fix outbox tests
Only emit notifications for the first "sendOutboxMessages" when universe is online.
Merge pull request #320 from mcav/outbox

Bug 921050 - Send email in the background. r=asuth
Bug 1039007 - [email/backend] Do not invoke operation callbacks until after any associated saves have safely hit the disk

The core of this is the save change.  This also exacerbated an intermittent
failure in test_activesync_recreate so I cleaned that up a little which
involved adding some more logging in this area.  (Well, I probably could
have gotten by without the extra logging, but I believe we are imminently
going to improve our upgrade mechanism, and that will want the logging, so
here we are.)
Merge pull request #323 from asutherland/op-callbacks-after-save

Bug 1039007 - [email/backend] Do not invoke operation callbacks until after any associated saves have safely hit the disk. r=mcav