Localize ICE failed message and add "no relay found"

resources/languages/resources.properties

@@ -805,6 +805,8 @@ service.gui.avatar.imagepicker.WEBCAM_ERROR=Webcam error
 
 service.gui.security.encryption.required=Encryption required!
 
+service.protocol.ICE_FAILED=Could not establish connection (ICE failed and no relay found)
+
 # impl.protocol.ssh
 #Contact Details Seperator(must not be part of contact data stored as persistent
 # data)

src/net/java/sip/communicator/impl/protocol/jabber/IceUdpTransportManager.java

@@ -1082,8 +1082,10 @@ public void propertyChange(PropertyChangeEvent evt)
         /* check the state of ICE processing and throw exception if failed */
         if(IceProcessingState.FAILED.equals(iceAgent.getState()))
         {
+            String msg = JabberActivator.getResources()
+                .getI18NString("service.protocol.ICE_FAILED");
             throw new OperationFailedException(
-                    "Could not establish connection (ICE failed)",
+                    msg,
                     OperationFailedException.GENERAL_ERROR);
         }
         }