added folder creation ability using '/-new'

IPython/html/services/notebooks/nbmanager.py

@@ -81,6 +81,12 b' class NotebookManager(LoggingConfigurable):'
                 
     allowed_formats = List([u'json',u'py'])
 
+    def add_new_folder(self, path=None):
+        new_path = os.path.join(self.notebook_dir, path)
+        if not os.path.exists(new_path):
+            os.makedirs(new_path) 
+        else:
+            raise web.HTTPError(409, u'Directory already exists or creation permission not allowed.')
 
     def load_notebook_names(self, path):
         """Load the notebook names into memory.

IPython/html/tree/handlers.py

@@ -77,6 +77,17 b' class ProjectRedirectHandler(IPythonHandler):'
         url = self.base_project_url + 'tree'
         self.redirect(url)
 
+class NewFolderHandler(IPythonHandler):
+    
+    @authenticate_unless_readonly
+    def get(self, notebook_path):
+        nbm = self.notebook_manager
+        name, path = nbm.named_notebook_path(notebook_path)
+        nbm.add_new_folder(path)
+        url = self.base_project_url + 'tree/' + notebook_path
+        self.redirect(url)
+        
+
 #-----------------------------------------------------------------------------
 # URL to handler mappings
 #-----------------------------------------------------------------------------
@@ -85,6 +96,7 b' class ProjectRedirectHandler(IPythonHandler):'
 _notebook_path_regex = r"(?P<notebook_path>.+)"
 
 default_handlers = [
+    (r"/tree/%s/-new" %_notebook_path_regex, NewFolderHandler),
     (r"/tree/%s/" % _notebook_path_regex, TreePathRedirectHandler),
     (r"/tree/%s" % _notebook_path_regex, ProjectPathDashboardHandler),
     (r"/tree", ProjectDashboardHandler),