CB

and new http library

PHPMailer updated and moved in MRs !281 , !283 and !284

Leaving open for adding new HTTP library.

Actually, using Guzzle 4.1.6 was more work than expected, as version 4 was only for PHP 5.4 but had major advantages over version 3. Thus I had to adapt it to work on PHP 5.3+ too.

But now it is done in MR !288 .