Added missing @DefaultLocale for newly introduced StringMessages

interface

java/com.sap.sse.security.ui/src/main/java/com/sap/sse/security/ui/client/i18n/StringMessages.java

@@ -1,7 +1,9 @@
 package com.sap.sse.security.ui.client.i18n;
 
 import com.google.gwt.core.client.GWT;
+import com.google.gwt.i18n.client.LocalizableResource.DefaultLocale;
 
+@DefaultLocale("en")
 public interface StringMessages extends com.sap.sse.gwt.client.StringMessages {
     public static final StringMessages INSTANCE = GWT.create(StringMessages.class);