Add java license

src/com/vaadin/terminal/gwt/client/MouseEventDetailsBuilder.java

@@ -4,6 +4,10 @@ import com.google.gwt.dom.client.Element;
 import com.google.gwt.dom.client.NativeEvent;
 import com.google.gwt.user.client.Event;
 
+/* 
+ @VaadinApache2LicenseForJavaFiles@
+ */
+
 public class MouseEventDetailsBuilder {
 
     public static MouseEventDetails buildMouseEventDetails(NativeEvent evt) {

src/com/vaadin/terminal/gwt/client/ui/AbstractConnector.java

@@ -10,6 +10,10 @@ import com.vaadin.terminal.gwt.client.ApplicationConnection;
 import com.vaadin.terminal.gwt.client.Connector;
 import com.vaadin.terminal.gwt.client.communication.ClientRpc;
 
+/* 
+ @VaadinApache2LicenseForJavaFiles@
+ */
+
 public abstract class AbstractConnector implements Connector {
 
     private ApplicationConnection connection;