Revert "Merge branch '136-store-dois-case-insensitive' into 'master'"
This reverts merge request !121 (merged). The introduced migration introduces errors:
duplicate key value violates unique constraint "PK_67d67dfce84ad92d7e5957cb97d"
This reverts merge request !121 (merged). The introduced migration introduces errors:
duplicate key value violates unique constraint "PK_67d67dfce84ad92d7e5957cb97d"