Merge branch '27-fix-domain-keyset-index' into release/2.59

upgrades/NEXT-domain-keyset-idx.sql

+---
+--- don't forget to update database schema version
+---
+UPDATE enum_parameters SET val = '2.59.3' WHERE id = 1;
+
+CREATE INDEX CONCURRENTLY IF NOT EXISTS domain_keyset_idx ON domain(keyset);