CC-2706: Streams should have a username field

- adding "User" field on stream setting form
- change key name from "output_s1" to "s1_output" format to be consistent
- changed order of inserting in default.sql file
- hiding username field on shoutcast selection
- liquidsoap and pypo takes care of user field input

airtime_mvc/application/models/StreamSetting.php

@@ -26,7 +26,6 @@ class Application_Model_StreamSetting {
                 foreach($d as $k=>$v){
                     $keyname = $prefix."_".$k;
                     if( $k == 'output'){
-                        $keyname = $k."_".$prefix;
                         if( $d["enable"] == 0){
                             $v = 'disabled';
                         }