Merge branch 'revert-aa3eda32' into 'master'

Revert "code_type should not be included"

See merge request eea-tools/raven!5

db_scripts/update_v9.sql

@@ -3,3 +3,4 @@ alter table zones alter column id drop default;
 alter table zones alter column id type varchar(100) using id::varchar(100);
 alter table zones alter column code type varchar(100) using code::varchar(100);
 alter table zones alter column zone_type_uri set default 'http://inspire.ec.europa.eu/codeList/ZoneTypeCode/air';
+alter table zones drop column zone_code;
\ No newline at end of file