添加zk日志，添加踢人下线功能（暂时屏蔽），修改逻辑层登陆接口.
Merge remote-tracking branch 'origin/master'

Conflicts:
	Code/Eb/EbCommon/UCenter/EbCommonType.cs
	Code/Es/EsEngine/UCenter/ServerUCenter.cs
	Code/Es/EsZkClient/Main/ZkClientImpl.cs