[#1792] Fix bug where filters weren't persisting

The problem was that I mistyped `current_filter` instead of `current_filters`

ckan/templates/package/snippets/resource_views_list_item.html

@@ -1,5 +1,5 @@
 {% set action = 'edit_view' if is_edit else 'resource_read' %}
-{% if current_filter %}
+{% if current_filters %}
   {% set url = h.url_for(controller='package', action=action, id=pkg.name,
                          resource_id=view.resource_id, view_id=view.id,
                          filters=current_filters) %}