upgrade hystrix to 1.4.4 and integrate dashboard changes

pom.xml

@@ -25,7 +25,7 @@
 		<archaius.version>0.6.5</archaius.version>
 		<eureka.version>1.1.147</eureka.version>
 		<feign.version>8.1.0</feign.version>
-		<hystrix.version>1.4.1</hystrix.version>
+		<hystrix.version>1.4.4</hystrix.version>
 		<ribbon.version>2.0.0</ribbon.version>
 		<zuul.version>1.0.28</zuul.version>
 		<netflix.rxjava.version>0.20.7</netflix.rxjava.version>

spring-cloud-netflix-hystrix-dashboard/src/main/java/org/springframework/cloud/netflix/hystrix/dashboard/HystrixDashboardConfiguration.java

@@ -251,7 +251,7 @@ public class HystrixDashboardConfiguration {
 						&& CONNECTION_CLOSE_VALUE.equalsIgnoreCase(header.getValue())) {
 					log.warn("Ignoring 'Connection: close' header from stream response");
 				}
-				else {
+				else if (!HttpHeaders.TRANSFER_ENCODING.equalsIgnoreCase(header.getName())) {
 					response.addHeader(header.getName(), header.getValue());
 				}
 			}

spring-cloud-netflix-hystrix-dashboard/src/main/resources/static/hystrix/components/hystrixCommand/templates/hystrixCircuit.html

@@ -9,6 +9,9 @@
 				<a href="javascript://" title="Timed-out Request Count" class="line tooltip timeout"><%= addCommas(rollingCountTimeout) %></a>
 				<a href="javascript://" title="Threadpool Rejected Request Count" class="line tooltip rejected"><%= addCommas(rollingCountThreadPoolRejected) %></a>
 			<% } %>
+			<% if(propertyValue_executionIsolationStrategy == 'SEMAPHORE') { %>
+				<a href="javascript://" title="Semaphore Rejected Request Count" class="line tooltip rejected"><%= addCommas(rollingCountSemaphoreRejected) %></a>
+			<% } %>
 			<a href="javascript://" title="Failure Request Count" class="line tooltip failure"><%= addCommas(rollingCountFailure) %></a> 
 		</div>
 		<div class="cell borderRight">

spring-cloud-netflix-hystrix-dashboard/src/main/resources/templates/hystrix/monitor.ftl

@@ -131,6 +131,8 @@
 					//	}, false);
 
 					source.addEventListener('error', function(e) {
+						$("#dependencies .loading").html("Unable to connect to Command Metric Stream.");
+						$("#dependencies .loading").addClass("failed");
 					  if (e.eventPhase == EventSource.CLOSED) {
 					    // Connection was closed.
 						  console.log("Connection was closed on error: " + JSON.stringify(e));
@@ -166,6 +168,8 @@
 					//	}, false);
 	
 					source.addEventListener('error', function(e) {
+                        $("#dependencies .loading").html("Unable to connect to Command Metric Stream.");
+                        $("#dependencies .loading").addClass("failed");
 					  if (e.eventPhase == EventSource.CLOSED) {
 					    // Connection was closed.
 						  console.log("Connection was closed on error: " + e);