This will help distinguish between the knowledgebase part which encompasses
FAQ's and canned responses, and the FAQ part which contains the articles
detailing frequently-asked-questions.

Add topicId to supported vars (else we can't create a Ticket) & Prevent api posts without attachements to trigger an uggly php error

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

Fixes: Assign Alerts now sent,  InternalNote Alert %message fixed. Added: %assigner to InternalNotes Template

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

* Improved and better init
* Better attachments handling
* Support for inline attachments

Remove staff only restriction on ajax controller - access control is on entry point (ajax.php) and exposed methods