CC-2661: Uptrade script for stream config feature

- codes for conserving user's liquidsoap.cfg and porting into new stream
setting config.
- extra fix: fixed a bug with shoutcast(default value has to be set for
some variables)

airtime_mvc/application/models/StreamSetting.php

@@ -30,6 +30,7 @@ class Application_Model_StreamSetting {
                             $v = 'disabled';
                         }
                     }
+                    $v = trim($v);
                     $sql = "UPDATE cc_stream_setting SET value='$v' WHERE keyname='$keyname'";
                     $CC_DBC->query($sql);
                 }