Modularize transaction/comment indexing in the FulltextEngine
Summary:
Ref T9979. This is currently hard-coded but can be done in a generic way.
This has one minor behavioral changes: answer text is no longer included in the question text index in Ponder. I'm not planning to accommodate that for now since I don't want to dig this hole any deeper than I already have. This behavior should be different anyway (e.g., index the answer, then show the question in the results or something).
Test Plan:
- Put a unique word in a Maniphest comment.
- Searched for the word.
- Found the task.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9979
Differential Revision: https://secure.phabricator.com/D14837