YARN-953. Changed ResourceManager to start writing history data. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1543113 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'apache/YARN-321' into YARN-954
Fixing bugs in webui, it can run now
Fixing bugs in webui, it can run now