Added support for saving receipts.

shop/shop.json

@@ -20,7 +20,12 @@
   \"price\" INTEGER NOT NULL,
   \"refId\" INTEGER NOT NULL,
   \"itemPlugin\" TEXT NULL,
-  \"vatType\" INTEGER NOT NULL);
+  \"vatType\" INTEGER NOT NULL,
+  \"voucher\" INTEGER NOT NULL,
+  CONSTRAINT \"voucher_fk\"
+    FOREIGN KEY (\"voucher\")
+    REFERENCES \"Voucher\" (\"id\")
+    DEFERRABLE INITIALLY DEFERRED);
 
 CREATE TABLE \"Voucher\" (
   \"id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
@@ -44,25 +49,6 @@ CREATE TABLE \"Voucher\" (
     FOREIGN KEY (\"contact\")
     REFERENCES \"AddressbookData\" (\"id\")
     DEFERRABLE INITIALLY DEFERRED);
-
-CREATE TABLE \"Voucher_items\" (
-  \"object_id\" INTEGER NOT NULL,
-  \"index\" INTEGER NOT NULL,
-  \"value\" INTEGER NULL,
-  CONSTRAINT \"object_id_fk\"
-    FOREIGN KEY (\"object_id\")
-    REFERENCES \"Voucher\" (\"id\")
-    ON DELETE CASCADE,
-  CONSTRAINT \"value_fk\"
-    FOREIGN KEY (\"value\")
-    REFERENCES \"VoucherItem\" (\"id\")
-    DEFERRABLE INITIALLY DEFERRED);
-
-CREATE INDEX \"Voucher_items_object_id_i\"
-  ON \"Voucher_items\" (\"object_id\");
-
-CREATE INDEX \"Voucher_items_index_i\"
-  ON \"Voucher_items\" (\"index\");
 "
     ],
     "dependencies" : [ "ADDRESSBOOK" ]