Update demo to show saved output to flash scope

This demo shows how flow output can be mapped to MVC flash scope.  In
this case the output is a simple string message that will be displayed
to the user.

Issues: SWF-1561

booking-mvc/src/main/webapp/WEB-INF/config/webmvc-config.xml

@@ -40,9 +40,10 @@
 	<!-- Dispatches requests mapped to flows to FlowHandler implementations -->
 	<bean class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
 		<property name="flowExecutor" ref="flowExecutor"/>
+		<property name="saveOutputToFlashScopeOnRedirect" value="true"/>
 	</bean>
 
 	<!-- Custom FlowHandler for the hotel booking flow -->
 	<bean name="hotels/booking" class="org.springframework.webflow.samples.booking.BookingFlowHandler" />	
 		
-</beans>
+</beans>

booking-mvc/src/main/webapp/WEB-INF/hotels/booking/booking-flow.xml

@@ -43,8 +43,10 @@
 		<transition on="cancel" to="cancel" />
 	</view-state>
 	
-	<end-state id="bookingConfirmed"/>
+	<end-state id="bookingConfirmed">
+		<output name="confirmed" value="'Your booking is confirmed, you can book another hotel by searching again.'"/>
+	</end-state>
 
 	<end-state id="cancel" />
 
-</flow>
+</flow>

booking-mvc/src/main/webapp/WEB-INF/hotels/search.jsp

@@ -1,5 +1,10 @@
 <%@ taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 
 <tiles:insertAttribute name="searchForm" />
 
+<c:if test="${not empty confirmed}">
+	<div class="confirmed">${confirmed}</div>
+</c:if>
+
 <tiles:insertAttribute name="bookingsTable" />

booking-mvc/src/main/webapp/styles/booking.css

@@ -51,3 +51,10 @@ button:hover {
 	font-weight: bold;	
 }
 
+div.confirmed {
+	border: solid 1px #CCCCCC;
+	background: #E4F7CD;
+	padding: 4px;
+	font-weight: bold;
+	margin-bottom: 4px;
+}