Closed tickets are those tickets owned by a user that are currently closed

Reviewed-By: Jared Hancock <jared@osticket.com>

Use email address when FROM field doesn't have a name.

Reviewed-By: Jared Hancock <jared@osticket.com>

Clear overdue flag on ticket update

If the due date or SLA changes and  pushes the actual deadline into the
future and the ticket is currently overdue, then drop the overdue flag.

Reviewed-By: Jared Hancock <jared@osticket.com>

Fix a few lint errors

Reviewed-By: Jared Hancock <jared@osticket.com>

Consistent decoding and transcoding to UTF-8 as anticipated by the rest of osTicket

Reviewed-By: Jared Hancock <jared@osticket.com>

Strip HMTL Comments from thread entries

Reviewed-By: Jared Hancock <jared@osticket.com>

Convert to desired charset when getting email parts.

Docs

Default timezone

Web attachments

Change file to unix file format

Add tasks

Upgrader revisited

Pagination 

Invalid CSRF token

Clear overdue + SLA

SAPI cli Interface

Ticket thread revisited

Conflicts:
	include/class.ticket.php

 - get_path_info() - simply returns the PATH_INFO if available
 - get_var() - get var from an array - checks if index is set & can validate type.