redirect logout page to login page directly

instead of relying on root redirect

jupyterhub/handlers/login.py

@@ -8,6 +8,7 @@ from urllib.parse import urlparse
 from tornado.escape import url_escape
 from tornado import gen
 
+from ..utils import url_path_join
 from .base import BaseHandler
 
 
@@ -22,7 +23,8 @@ class LogoutHandler(BaseHandler):
                 self.clear_login_cookie(name)
             user.other_user_cookies = set([])
             self.statsd.incr('logout')
-        self.redirect(self.hub.server.base_url, permanent=False)
+
+        self.redirect(url_path_join(self.hub.server.base_url, 'login'), permanent=False)
 
 
 class LoginHandler(BaseHandler):