R1:a9ceebbdb116

Move all ApplicationTransaction publishing to daemons

Summary:
Ref T6367. Do all mail, feed, notification and search stuff from the daemons, in all editors.

There are four relatively-stateful editors (Audit, Differential, Phriction, PhortuneCart) which needed special care to move state into the daemons properly.

Beyond that, I moved mailTo/mailCC/feedRelated/feedNotify to be computed before we enter the worker:

- This is simpler, since a lot of editors rely on being able to call `$object…