Lock daemon configuration

Summary: I feel like the daemon configuration should be locked from editing from the web UI, given that much of it won't work unless the daemons are restarted anyway.

Test Plan: N/A

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14867