Not just the SelectionField. This will make room for the InlineFormField

forms: Add all forms to the filter subsystem

Reviewed-By: Peter Rotich <peter@osticket.com>

forms: Better feedback for client side upload fails

Reviewed-By: Peter Rotich <peter@osticket.com>

Statuses revisited (again)

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

Make the error message clear

Conflicts:
	include/class.export.php
	include/client/login.inc.php
	include/staff/ticket-view.inc.php

Sanity check for callable check

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

forms: Drag and drop uploads

Reviewed-By: Peter Rotich <peter@osticket.com>

Attachment settings are now exclusively handled by the settings on the
ThreadEntry field on the ticket details form. Enabling attachments as well
as tuning attachment validation settings are all handled from the one place
now.

Only one file is supported at a time now; but at least the files are saved
and displayed in the event of validation errors.