Made registered model name look like other model names

IPython/html/static/notebook/js/widgets/container.js

@@ -1,30 +1,30 b''
 require(["notebook/js/widget"], function(){
     var ContainerModel = IPython.WidgetModel.extend({});
-    IPython.notebook.widget_manager.register_widget_model('container_widget', ContainerModel);
+    IPython.notebook.widget_manager.register_widget_model('ContainerWidgetModel', ContainerModel);
 
     var ContainerView = IPython.WidgetView.extend({
         
         render : function(){
             this.$el = $('<div />')
                 .addClass('widget_container')
                 .addClass(this.model.comm.comm_id);
         },
         
         update : function(){
 
             // Apply flexible box model properties by adding and removing
             // corrosponding CSS classes.
             // Defined in IPython/html/static/base/less/flexbox.less
             var flex_properties = ['vbox', 'hbox', 'center', 'end', 'center'];
             for (var index in flex_properties) {
                 if (this.model.get('_' + flex_properties[index])) {
                     this.$el.addClass(flex_properties[index]);
                 } else {
                     this.$el.removeClass(flex_properties[index]);
                 }    
             }
         },
     });
 
     IPython.notebook.widget_manager.register_widget_view('ContainerView', ContainerView);
 });
  No newline at end of file

IPython/html/widgets/widget_container.py

@@ -1,42 +1,42 b''
 from widget import Widget
 from IPython.utils.traitlets import Unicode, Bool
 
 class ContainerWidget(Widget):
-    target_name = Unicode('container_widget')
+    target_name = Unicode('ContainerWidgetModel')
     default_view_name = Unicode('ContainerView')
     _keys = ['_vbox', '_hbox', '_start', '_end', '_center']
     _trait_changing = False
 
     _hbox = Bool(False)
     _vbox = Bool(False)
     _start = Bool(False)
     _end = Bool(False)
     _center = Bool(False)
     
     def hbox(self, enabled=True):
         self._hbox = enabled
         if enabled:
             self._vbox = False
     
     def vbox(self, enabled=True):
         self._vbox = enabled
         if enabled:
             self._hbox = False
             
     def start(self, enabled=True):
         self._start = enabled
         if enabled:
             self._end = False
             self._center = False
             
     def end(self, enabled=True):
         self._end = enabled
         if enabled:
             self._start = False
             self._center = False
             
     def center(self, enabled=True):
         self._center = enabled
         if enabled:
             self._start = False
             self._end = False