Merge remote-tracking branch 'origin/v1.6' into v1.6

backend/src/main/resources/db/migration/V29__de1.6.sql

@@ -13,7 +13,7 @@ CREATE TABLE `dataset_row_permissions` (
 )ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_general_ci;
 
 
-ALTER TABLE `panel_link` ADD COLUMN `user_id` BIGINT(20) NULL DEFAULT NULL ;
+ALTER TABLE `panel_link` ADD COLUMN `user_id` BIGINT(20) NULL DEFAULT NULL, DROP PRIMARY KEY;
 
 ALTER TABLE `panel_link_mapping` ADD COLUMN `user_id` BIGINT(20) NULL DEFAULT NULL ;