Merged branch '4.6' #3448

Job	Run time
Unit tests & SQLite integration tests (8.3)	8m 14s
Run code style check (8.3)	2m 39s
Run rector (8.3)	3m 5s
Solr integration tests (8.3)	14m 51s
MySQL integration tests (8.0) (8.3)	23m 21s
MySQL integration tests (8.4) (8.3)	23m 42s
PostgreSQL integration tests (8.3)	26m 12s
	1h 42m 4s

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