fixed a bug that InSending status is not cleared when return the Send method
improved the code about server status collecting
added a new protected virtual method "OnStarted()" to replace "OnStartup()"
added a new property "BaseDirectory" for Bootstrap
changed for the changes about OnStartup() => OnStarted()
fixed some bugs in the serializing of NodeStatus
fixed some bugs about the server status saving
fixed a bug of the ProcessLocker
tried to implement ManagementServer
added the support for the client certificate validation
fixed the InSending/InReceiving state uncontrolled issue
Merge pull request #6 from kerryjiang/master

update