Paging samples does not preserve search GET parameters

[MatthewMah]

To reproduce:

1, Search by culture.
2. Go to second page.

Navigating to the second page does not preserve the culture search.

See https://stackoverflow.com/questions/2047622/how-to-paginate-django-with-other-get-variables
There is a simple solution in Django 5.1, so depends on #74.