Move ticket status change to unified backend.

If a comment is provided it's handled as an internal note - allowing for
alerts to be sent out (if enabled)

Messages are extracted on post-action redirect.

Only cache results for ALL items

Conflicts:
	include/class.thread.php
	include/staff/header.inc.php

oops: Fix incorrectly placed header line

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

Fix XSS Vulnerability In "tpl.inc.php"

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

oops: Allow filter to set help topic

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

Handle Macintosh style line endings for CSV import

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

Fix applied to where the value is directly output to browser instead of where fetched in case special chars are allowed in `code_name`, which may break logic prior to output.

Turns out including a PHP file in a PHAR file is not cacheable by APC. This
patch adds APC stash support to the translation loading phase, if supported.
This seems to save about 2.5ms (3.6ms down to 1.1ms) processing time per
request. Most of the savings is in the PHAR file processing time (signature
verification), which is avoided if the translation can be loaded from APC.

Merge conflict caused the inclusion of the template to be lost

Crowdin seems to have difficulty parsing YAML files with spaces between list
items. This patch avoids the issue by removing unnecessary empty lines in
the file.