Fixes #1339: Fixed disappearing checkbox column under django-tables2 …

…v1.7+

netbox/utilities/views.py

@@ -123,7 +123,7 @@ def get(self, request):
         # Construct the table based on the user's permissions
         table = self.table(self.queryset)
         if 'pk' in table.base_columns and (permissions['change'] or permissions['delete']):
-            table.base_columns['pk'].visible = True
+            table.columns.show('pk')
 
         # Apply the request context
         paginate = {