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.

This will allow for more complex widgets to be added as plugins which
include css and javascript media files without manually adding header or
footer lines.

Make sure the check is callable
Use call_user_func_array when calling user defined function

Add translation context to ticket states

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

Add context to ticket state name (noun) and action (verbs)

Conflicts:

	include/class.forms.php

html: Fix dropped text after inserted image

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