cc-2055: switch to init.d

-allow install script to be created from any location (no hardcoded paths)
-make python install scripts return 1 on error
-daemon now started automatically on boot using rc.local autostart
-change all prints to logs instead
-create airtime-uninstall shell script (and remove pypo user in here)
-create pypo user in shell script

python_apps/media-monitor/MediaMonitor.py

@@ -33,7 +33,8 @@ except Exception, e:
 try:
     config = ConfigObj('/etc/airtime/MediaMonitor.cfg')
 except Exception, e:
-    print 'Error loading config file: ', e
+    logger = logging.getLogger();
+    logger.error('Error loading config file: %s', e)
     sys.exit()
 
 """