add list_event_data in structure.sql

sql/structure.sql

@@ -355,6 +355,7 @@ CREATE TABLE groupbasket
   basket_id character varying(32) NOT NULL,
   list_display json DEFAULT '[]',
   list_event character varying(255),
+  list_event_data jsonb,
   CONSTRAINT groupbasket_pkey PRIMARY KEY (group_id, basket_id),
   CONSTRAINT groupbasket_unique_key UNIQUE (id)
 )