Clean up some Ponder language
Summary:
Ref T9099.
- Remove unused function
- Fix celerity resource include
- Add a note when an answer's been closed
- Clean up architecture a little
- Add a better notice when you've already answered.
Test Plan: Test with and without answers, with answering, with being closed.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T9099
Differential Revision: https://secure.phabricator.com/D13875