Summary:
Port MetaMTA options for Owners, Pholio and Macro.
At some point I'd like to get rid of all these options (provide one "reply domain", and not allow overrides of reply handlers -- use events instead) but that's a battle we can fight later.
Test Plan: Looked at options, looked at setup issues, edited something.
Reviewers: codeblock, btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2255
Differential Revision: https://secure.phabricator.com/D4469
