proper '.py' and '.ipynb' download files

IPython/html/services/notebooks/handlers.py

@@ -69,17 +69,22 b' class NotebookHandler(IPythonHandler):'
             self.finish(jsonapi.dumps(notebooks))
         else:
             format = self.get_argument('format', default='json')
+            download = self.get_argument('download', default='False')
             model = nbm.notebook_model(name,path)
             last_mod, representation, name = nbm.get_notebook(name, path, format)
-
-            if format == u'json':
-                self.set_header('Content-Type', 'application/json')
-                self.set_header('Content-Disposition','attachment; filename="%s.ipynb"' % name)
-            elif format == u'py':
-                self.set_header('Content-Type', 'application/x-python')
-                self.set_header('Content-Disposition','attachment; filename="%s.py"' % name)
-            #self.set_header('Last-Modified', last_mod)
-            self.finish(jsonapi.dumps(model))
+            self.set_header('Last-Modified', last_mod)
+            
+            if download == 'True':
+                if format == u'json':
+                    self.set_header('Content-Type', 'application/json')
+                    self.set_header('Content-Disposition','attachment; filename="%s.ipynb"' % name)
+                    self.finish(representation)
+                elif format == u'py':
+                    self.set_header('Content-Type', 'application/x-python')
+                    self.set_header('Content-Disposition','attachment; filename="%s.py"' % name)
+                    self.finish(representation)
+            else:
+                self.finish(jsonapi.dumps(model))
 
     @web.authenticated
     def patch(self, notebook_path):

IPython/html/static/notebook/js/menubar.js

@@ -91,14 +91,14 b' var IPython = (function (IPython) {'
         });
         this.element.find('#download_ipynb').click(function () {
             var notebook_name = IPython.notebook.get_notebook_name();
-            var url = that.baseProjectUrl() + 'api/notebooks/' +
-                      notebook_name + '?format=json';
+            var url = that.baseProjectUrl() + 'api/notebooks/' + that.notebookPath() +
+                      notebook_name + '?format=json'+ '&download=True';
             window.location.assign(url);
         });
         this.element.find('#download_py').click(function () {
             var notebook_name = IPython.notebook.get_notebook_name();
-            var url = that.baseProjectUrl() + 'api/notebooks/' +
-                      notebook_name + '?format=py';
+            var url = that.baseProjectUrl() + 'api/notebooks/' + that.notebookPath() +
+                      notebook_name + '?format=py' + '&download=True';
             window.location.assign(url);
         });
         this.element.find('#rename_notebook').click(function () {