If an attachment is submitted via the API and the filetype is rejected, the
file would be attached anyway. However, if the file was encoded base64, the
content would not be decoded.

Spelling, grammar and readability in upgrader documents
  - Tweaked spelling, grammar and wording to make the text of the upgrader
    pages more readable.
Fixed spelling regression
  - Higly —> Highly
Spelling and readability fixes for /include/class.* files
  - Fixed some spelling mistakes
A couple more spelling/readability fixes.
  - More fixes

Make sure ticket api controller enforces attachments settings (don't trust data parsers).

 - local piping must use api/pipe.php
 - API Key is not required - bypasses TicketApiController::create
 - Overwrites ApiController's response method -  postfix exit codes are used as opposed to http codes

Add special case and helper method to process emails

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>