fix: don't cache ajax request on course details page in Studio

Caching this was making the browser render a JSON with this request because of
the Backbone.js router.

cms/static/js/factories/settings.js

@@ -34,7 +34,8 @@ define([
                 editor.useV2CertDisplaySettings = useV2CertDisplaySettings;
                 editor.render();
             },
-            reset: true
+            reset: true,
+            cache: false
         });
     };
 });