Summary:
Fixes T7977.
- Move Indexed Languages and See Symbols From config to Repository
- Make symbol search skip projects
This also makes the default languages to Everything instead of Nothing.
Test Plan:
- Browse files, click symbols.
- Use quick search to find symbols
- Browse revision, click symbols
Reviewers: joshuaspence, epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T7977
Differential Revision: https://secure.phabricator.com/D12687
