CC-2910: Ability to collapse stream sections in "Stream Settings"

- done
- only stream 1 is expanded by default

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

@@ -120,6 +120,12 @@ $(document).ready(function() {
         return false;
     });
     
+    $('.collapsible-header').click(function() {
+        $(this).next().toggle('fast');
+        $(this).toggleClass("close");
+        return false;
+    })
+    
     showErrorSections()