Summary:
Ref T1191.
- Adds support for custom fields.
- Adds support for partial indexes (indexes on a prefix of a column).
- Drops old auxiliary storage table: this was moved to custom field storage about a year ago.
- Drops old project table: this was moved to edges about two months ago.
Test Plan:
- Viewed web UI, saw fewer issues.
- Used `grep` to verify no readers/writers for storage or project table.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T1191
Differential Revision: https://secure.phabricator.com/D10526
