AMBARI-1140. Resuming deploy for Installer/Add Hosts does not work if the browser is shut down during the start phase of deploy. (Arun Kandregula via yusaku)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1431817 13f79535-47bb-0310-9956-ffa450edef68
AMBARI-1145. Cluster Management refactoring. (yusaku)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1431818 13f79535-47bb-0310-9956-ffa450edef68