def pagination_number_list 
      (0...page_button_count).to_a.map do |n|
        link_number = n + page_number_offset
        number_span(link_number)
      end.join(' ')
    end
def pagination_number_list 
      (0...page_button_count).to_a.map do |n|
        link_number = n + page_number_offset
        number_span(link_number)
      end.join(' ')
    end
List of number links for the number range between next and previous