use PAGE_SIZE constant in pagination.html

files/templates/pagination.html

@@ -1,6 +1,9 @@
 
 <nav>
 	<ul class="pagination pagination-sm mb-0 mt-4 pl-1">
+		{% if not size %}
+			{% set size = PAGE_SIZE %}
+		{% endif %}
 		{% set num_pages = (next_exists / size) | round(0, 'ceil') | int %}
 
 		{% set start_point = page - 2 %}