[Fast forward] Merged branch '4.5' #1584

Job	Run time
Run code style check (8.0)	2m 33s
Solr integration tests (7.4)	9m 49s
Unit tests & SQLite integration tests (7.4)	6m 52s
Solr integration tests (8.0)	10m 23s
Unit tests & SQLite integration tests (8.0)	6m 40s
Solr integration tests (8.1)	9m 39s
Unit tests & SQLite integration tests (8.1)	6m 32s
PostgreSQL integration tests (7.4)	22m 35s
PostgreSQL integration tests (8.0)	36m 54s
MySQL integration tests (7.4)	12m 53s
PostgreSQL integration tests (8.1)	23m 31s
MySQL integration tests (8.0)	12m 37s
MySQL integration tests (8.1)	12m 42s
	2h 53m 40s

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