Fixed saved voucher recalculation.

closes #278

shop/settings/shopsettingsform.ui

@@ -17,7 +17,7 @@
    <item>
     <widget class="QTabWidget" name="tabWidget">
      <property name="currentIndex">
-      <number>2</number>
+      <number>0</number>
      </property>
      <widget class="QWidget" name="tab">
       <attribute name="title">

shop/shopservice.cpp

@@ -247,6 +247,11 @@ void ShopService::moveItems(QList<VoucherItemPtr> items, VoucherPtr source, Vouc
     {
         erase(source);
     }
+    else
+    {
+        calculate(source);
+        update(source);
+    }
 
     tx.commit();
 }