cc-2055: switch to init.d

-fix uninstall scripts
-make daemon script for media-monitor and show-recorder
-create pid file for liquidsoap
-fix airtime-check-system
-make sure all startup scripts are using exec

python_apps/media-monitor/airtime-media-monitor

@@ -12,6 +12,6 @@ exec 2>&1
 export PYTHONPATH=${api_client_path}
 
 # Note the -u when calling python! we need it to get unbuffered binary stdout and stderr
-python -u ${media_monitor_path}${media_monitor_script}
+exec python -u ${media_monitor_path}${media_monitor_script}
 
 # EOF