Fixed page 404 and some tests

boards/tests/test_views.py

@@ -1,5 +1,5 b''
 import logging
-from django.core.urlresolvers import reverse, NoReverseMatch
+from django.urls import reverse, NoReverseMatch
 from django.test import TestCase, Client
 from boards import urls
 

boards/views/not_found.py

@@ -8,7 +8,7 b' class NotFoundView(BaseBoardView):'
     Page 404 (not found)
     """
 
-    def get(self, request):
+    def get(self, request, *args, **kwargs):
         params = self.get_context_data()
 
         response = render(request, 'boards/404.html', params)