#207: fixed serialization issues

- this was broken in 4.6.0
#210: added (investigation) zkMonitor

- use of new linkedin-zookeeper lib with tighter multi-thread handling
- use "official" method to simulate session expired in ZooKeeper
#211: fixed fabric select
#212: fixed 405 when Accept header
#206: added glu.agent.address
#205: exposed zookeeperRoot
#213: fixed extra redirect on dashboard
#214: fixed column name remapping issue
4.7.1: updated release notes