PHRAS-4038 : Phraseanet - 403 on two prod pages opened simutaniously #816

Job	Run time
build phraseanet-db / build	25s
build phraseanet-nginx / build	2m 55s
build phraseanet-elasticsearch / build	24s
build phraseanet-fpm / build	3m 40s
build phraseanet-setup / build	4m 4s
build phraseanet-worker / build	3m 44s
unit test	5m 39s
	20m 51s

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