bug fixed: sendJsonString send text message does not use writer cause output string only support iso-8859-1 character set.
Newly add mail, database and RMI monitor interface.
Disable mail service debug info
* Bug fixed: security matcher throw null pointer exception when session variable not found.
* Bug fixed: Security editor redirection setting does not saved.
* Bug fixed: throw null pointer exception when using session matcher but currently no session available.