Fix language client side filter

src/main/java/nl/tudelft/queue/realtime/messages/RequestCreatedMessage.java

@@ -51,6 +51,8 @@ public class RequestCreatedMessage extends View<LabRequest> implements Message {
 	private Long buildingId;
 	private String buildingName;
 
+	private String language;
+
 	private OnlineMode onlineMode;
 
 	private String onlineModeDisplayName;