testMaker Code

First changes for the new handling of certificates.

few bugfixes: mkdir filehandling (no permission denied on some unix machines); typo in file name (feedbackBlock instead of feedBackblock), email lib problem on unix server (PHP_EOL instead of \r\n), adjusted padding in item templates, improved autotester.js (no js error, no object), improved german sentence (um-zu-sentence)

Added the possibility to disable the bar code.

Add bar code to certificate. (Bar code 39)

New structure of media directory.

Improvement with certificates. See tickets 3073973 and 3061864.

Fixes that TM did not work under Linux. Due to session problems. Reason was that $_REQUEST no longer contains $_COOKIES by default since PHP 5.3. This is now a setting in php.ini.

Fix some bugs and make some changes with emails for deleting accounts

removed a small noticed error in the session handler

replaced old deprecated php functions with newer ones