Fixed serialization issues

Change-Id: I5dc1f2dc061c4b6bb6d00040b972802df97d3f89

server/src/com/vaadin/server/LocaleService.java

@@ -19,6 +19,7 @@
  */
 package com.vaadin.server;
 
+import java.io.Serializable;
 import java.text.DateFormat;
 import java.text.DateFormatSymbols;
 import java.text.SimpleDateFormat;
@@ -37,7 +38,7 @@ import com.vaadin.ui.UI;
  * @since 7.1
  * @author Vaadin Ltd
  */
-public class LocaleService {
+public class LocaleService implements Serializable {
 
     private UI ui;
 

server/src/com/vaadin/server/Page.java

@@ -306,7 +306,7 @@ public class Page implements Serializable {
         }
     }
 
-    private static interface InjectedStyle {
+    private static interface InjectedStyle extends Serializable {
         public void paint(int id, PaintTarget target) throws PaintException;
     }
 

server/tests/src/com/vaadin/tests/server/TestClassesSerializable.java

@@ -60,6 +60,10 @@ public class TestClassesSerializable extends TestCase {
             "com\\.vaadin\\.sass.*", //
             "com\\.vaadin\\.testbench.*", //
             "com\\.vaadin\\.util\\.CurrentInstance\\$1", //
+            "com\\.vaadin\\.server\\.communication\\.PushConnection", //
+            "com\\.vaadin\\.server\\.communication\\.AtmospherePushConnection", //
+            "com\\.vaadin\\.util\\.ConnectorHelper", //
+            "com\\.vaadin\\.server\\.VaadinSession$FutureAccess", //
     };
 
     /**