Fix the save action in an EditableGrid when there are more than 1 edi…

…table grids on the page (wicketstuff#558)

* Fix edit and save actions for multiple editable grids in one page
* Fix save action when there is more than one grid in the same page

editable-grid-parent/editable-grid/src/main/java/org/wicketstuff/egrid/component/EditableDataTable.java

@@ -32,6 +32,7 @@
 import org.wicketstuff.egrid.model.OperationType;
 import org.wicketstuff.egrid.provider.IEditableDataProvider;
 import org.wicketstuff.egrid.toolbar.AbstractEditableGridToolbar;
+import org.wicketstuff.egrid.component.EditableDataTable;
 
 /**
  * 
@@ -517,8 +518,10 @@ public void onEvent(IEvent<?> event)
 		{
 			@SuppressWarnings("unchecked")
 			Item<T> rowItem = ((Item<T>)event.getPayload());
-			this.datagrid.refreash(rowItem);
-			event.stop();
+			if (rowItem.findParent(EditableDataTable.class).equals(this)) {
+				this.datagrid.refreash(rowItem);
+				event.stop();
+			}
 		}
 		else if (event.getPayload() instanceof GridOperationData)
 		{