Added the PDF24 API

Is a javascript API to convert HTML to a PDF.
As Lob only supports PDFs as input, we need to convert our message
to a PDF somehow, and if we do HTML->PDF, we don't lose any formatting.
Removed the JS api, are now using a PHP libarary.

It's a nice libarary. testPDF will create a PDF of some static HTML.
Merge branch 'master' of https://github.com/Scuzzball/GrandMail
inputEmail.php: Start of actual parser