[#2722] Re implement the sort by field on the group form

ckan/templates/package/snippets/search_form.html

@@ -1,9 +1,9 @@
-<form id="dataset-search" class="dataset-search clearfix" method="GET">
+<form id="dataset-search" class="dataset-search clearfix" method="GET" data-module="select-switch">
   <span class="control-group search-giant">
     <input type="text" class="search" name="q" value="{{ c.q }}" autocomplete="off" placeholder="{{ _('Search...') }}" />
     <button type="submit" value="{{ _('Search') }}">Submit</button>
   </span>
-  {# {{ h.snippet('snippets/sort_by.html', sort=c.sort_by_selected) }} #}
+  {% snippet 'snippets/sort_by.html', sort=c.sort_by_selected %}
   {% if c.fields %}
     <span>
       {% for key, value in c.fields %}