Merge branch 'HandleHttpErrors' into 'dev'

Correct http response status code

See merge request federez/re2o!418

re2o/views.py

@@ -125,10 +125,10 @@ def contact_page(request):
 
 def handler500(request):
     """The handler view for a 500 error"""
-    return render(request, 'errors/500.html')
+    return render(request, 'errors/500.html', status=500)
 
 
 def handler404(request):
     """The handler view for a 404 error"""
-    return render(request, 'errors/404.html')
+    return render(request, 'errors/404.html', status=404)