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

- removed debug code from NowPlayingController
- New Form for streamsetting
- Action created in PreferenceController

airtime_mvc/public/js/airtime/preferences/preferences.js

@@ -1,6 +1,6 @@
 function showErrorSections() {
 
-    if($("soundcloud-settings .errors").length > 0) {
+    if($("#soundcloud-settings .errors").length > 0) {
         $("#soundcloud-settings").show();
         $(window).scrollTop($("soundcloud-settings .errors").position().top);
     }