Cleanup + DOS->Uni* line-breaks converted

This merge request contains a "complete" change of SoaClientAuth.php which is just a change in line-break. So all PHP scripts have the same. Plus it contains some cleanups for better reading.

It also changes true->TRUE, false->FALSE and null->NULL. This change will use "magic constants" instead of PHP keywords which can be better optimized (memory and/or CPU utilization).