Some updates

1. https://github.com/LiveHelperChat/livehelperchat/issues/381
2. https://github.com/LiveHelperChat/livehelperchat/issues/382
3. https://github.com/LiveHelperChat/livehelperchat/issues/374
4. https://github.com/LiveHelperChat/livehelperchat/issues/360
5. Then user reopens chat, chat status won't be changed unless it's closed. 

execute doc/update_db/update_78.sql for update and follow standard upgrade tutorial.

If you are using XMPP notifications edit xmpp notifications and in "XMPP Message about accepted chat" enter
{user_name} has accepted a chat [{chat_id}]
{messages}
{url_accept}