remove reverse dependency for Keyboard

notebook/static/base/js/keyboard.js

@@ -9,11 +9,10 @@
  */
 
 define([
-    'base/js/namespace',
     'jquery',
     'base/js/utils',
     'underscore',
-], function(IPython, $, utils, _) {
+], function($, utils, _) {
     "use strict";
 
 
@@ -447,8 +446,5 @@ define([
         event_to_shortcut : event_to_shortcut,
     };
 
-    // For backwards compatibility.
-    IPython.keyboard = keyboard;
-
     return keyboard;
 });

notebook/static/base/js/namespace.js

@@ -5,6 +5,7 @@ var IPython = IPython || {};
 define(function(){
     var utils = require('base/js/utils');
     IPython.security = require('base/js/security');
+    IPython.keyboard = require('base/js/keyboard');
     IPython.utils = utils;
     IPython.load_extensions = utils.load_extensions;