add support for LoginRequiredMiddleware with login_not_required decoreator

Author: dulmandakh

debug_toolbar/decorators.py

@@ -5,9 +5,15 @@
 
 from debug_toolbar import settings as dt_settings
 
+try:
+    from django.contrib.auth.decorators import login_not_required
+except ImportError:
+    def login_not_required(func):
+        return func
 
 def require_show_toolbar(view):
     @functools.wraps(view)
+    @login_not_required
     def inner(request, *args, **kwargs):
         from debug_toolbar.middleware import get_show_toolbar