Eugen Rochko 19b4c666f7
Improve account index migration (#7684)
* Improve account index migration

- Display more progress in stdout
- Catch PG::UniqueViolation when re-attributing favourites
- Skip callbacks and validations when re-attributing other relationships

* Use in_batches to reduce table lock-up during account merge

* Use #say_with_time to benchmark each deduplication
2018-05-31 17:09:09 +02:00
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