Added 'Collection' to the filter list for samples

ckan/src/ckanext-igsn-theme/ckanext/igsn_theme/templates/snippets/facet_list.html

@@ -4,7 +4,7 @@
     {% set hide_empty = hide_empty or false %}
     {% with items = items or h.get_facet_items_dict(name, search_facets) %}
     {% if items or not hide_empty %}
-        {% if name not in ['organization', 'groups' , 'license_id', 'res_format'] %}
+        {% if name not in ['groups' , 'license_id', 'res_format'] %}
             {% block facet_list_item %}
             <section class="module module-narrow module-shallow">
                 {% block facet_list_heading %}