Summary:
- Add a "developer" option group.
- Add an "access log" option group.
- Render the types "bool", "int" and "string" in a more tailored way.
- Add a config check for dead config. Right now this serves as a "TODO" list of things that need to be migrated.
Test Plan: Looked at config options, setup issues. Edited bool, int, string options.
Reviewers: codeblock, btrahan
Reviewed By: codeblock
CC: aran
Maniphest Tasks: T2255
Differential Revision: https://secure.phabricator.com/D4308
