CC-2607: Abilitiy to adjust stream bitrate, type, etc from the UI

interface

- dummy page "Stream Setting" page for the test
- StreamSetting model is added
- set owner and group as 'pypo' for liquidsoap.cfg
- pypofech handle 'update_stream_setting' command

airtime_mvc/application/forms/StreamSetting.php

@@ -0,0 +1,13 @@
+<?php
+
+class Application_Form_StreamSetting extends Zend_Form_SubForm
+{
+
+    public function init()
+    {
+        $this->setDecorators(array(
+            array('ViewScript', array('viewScript' => 'form/stream_setting.phtml'))
+        ));
+    }
+}
+