Set Process Name to the main APAF Services

[fpietrosanti]

Currently APAF run as a long command line over twisted on Linux and OSX (even if packaged with .app).
So when you make a "ps -auxw" you see a long command line for which APAF application is started.

This ticket is to make the APAF process name appear like "APAF Service", like any other standalone daemon.

To do that we can use Setproctitle http://pypi.python.org/pypi/setproctitle .