* Live chat: More clear msg to notify agent is offline
* Live chat: After sending a new message in ticket, focus on textbox is lost
* Live chat: Closing a ticket, will notify webmaster as a new message

git-svn-id: https://plugins.svn.wordpress.org/hitsteps-visitor-manager/trunk@954096 b8457f37-d9ea-0310-8a92-e5e31aec5664