fix(images): use autogenerated ids to prevent duplicate key violations on insertion later.

See cdb000e commit for details.

Addressed to #1034

Author: php-coder

src/main/resources/liquibase/sql/test-series-with-catalogs-numbers.sql

@@ -7,7 +7,7 @@ INSERT INTO users(id, login, role, name, registered_at, activated_at, hash, salt
 	(4, 'test1', 'USER', 'Series Owner', NOW(), NOW(), '@old_valid_user_password_hash@', '@old_valid_user_password_salt@', 'test1@example.org');
 
 -- Used only in src/test/robotframework/series/creation/misc-user.robot
-INSERT INTO images(id, type) VALUES(1, 'PNG');
+INSERT INTO images(type) VALUES('PNG');
 INSERT INTO series(id, quantity, perforated, image_url, created_at, created_by, updated_at, updated_by) VALUES
 	(1, 1, TRUE, '/image/1', NOW(), 4, NOW(), 4);