Remove recursion

plugins/c9.core/settings.js

@@ -395,7 +395,7 @@ define(function(require, exports, module) {
             hash[key] = value;
             
             // Tell everyone this property changed
-            emit(parts.join("/"));
+            emit(parts.join("/"), value);
             // Tell everyone it's parent changed
             emit(query, value);
             

plugins/c9.ide.preferences/experimental.js

@@ -30,6 +30,8 @@ define(function(require, exports, module) {
             if (loaded) return false;
             loaded = true;
             
+            settings.setDefaults("state/experiments", [["@enabled", true]]);
+            
             plugin.form.add([{
                 type: "custom",
                 title: "Introduction",