Implement consistent paginator across admin pages.

[Antoliny]

Current pagination implemented in the admin pages performs the same functionality but is classified differently.
When applying pagination in the change_list page, it was implemented through template tags.

ChangeList

# change_list.html
...
{% block pagination %}{% pagination cl %}{% endblock %}
...

# templatetags/admin_list.py

def pagination(cl):
    """
    Generate the series of links to the pages in a paginated list.
    """
    pagination_required = (not cl.show_all or not cl.can_show_all) and cl.multi_page
    page_range = cl.paginator.get_elided_page_range(cl.page_num) if pagination_required else []
    need_show_all_link = cl.can_show_all and not cl.show_all and cl.multi_page
    return {
        'cl': cl,
        'pagination_required': pagination_required,
        'show_all_url': need_show_all_link and cl.get_query_string({ALL_VAR: ''}),
        'page_range': page_range,
        'ALL_VAR': ALL_VAR,
        '1': 1,
    }

HistoryView

# object_history.html 
...
    <p class="paginator">
      {% if pagination_required %}
        {% for i in page_range %}
          {% if i == action_list.paginator.ELLIPSIS %}
            {{ action_list.paginator.ELLIPSIS }}
          {% elif i == action_list.number %}
            <span class="this-page">{{ i }}</span>
          {% else %}
            <a href="?{{ page_var }}={{ i }}" {% if i == action_list.paginator.num_pages %} class="end" {% endif %}>{{ i }}</a>
          {% endif %}
        {% endfor %}
      {% endif %}
      {{ action_list.paginator.count }} {% if action_list.paginator.count == 1 %}{% translate "entry" %}{% else %}{% translate "entries" %}{% endif %}
    </p>
...

Of course, I believe implementing this through a template tag would be a better approach. However, the reason history view had to be implemented this way is that the pagination related template tags only work with ChangeList.

Looking towards the future, this structure will require rewriting duplicate logic like object_history.html again.
(+ I think it could be quite painful if we need to extend or customize it.)

I'm confident that it would be better to manage these common parts through a template tag in one place.