[fix] opensearch autocomplete

searx/templates/opensearch.xml

   <LongName>searx metasearch</LongName>
   {% if method == 'get' %}
     <Url type="text/html" method="get" template="{{ host }}?q={searchTerms}"/>
-    {% if client.autocompleter %}
+    {% if autocomplete %}
     <Url type="application/x-suggestions+json" method="get" template="{{ host }}autocompleter">
         <Param name="format" value="x-suggestions" />
         <Param name="q" value="{searchTerms}" />
     <Url type="text/html" method="post" template="{{ host }}">
         <Param name="q" value="{searchTerms}" />
     </Url>
-    {% if client.autocompleter %}
+    {% if autocomplete %}
     <!-- TODO, POST REQUEST doesn't work -->
     <Url type="application/x-suggestions+json" method="get" template="{{ host }}autocompleter">
         <Param name="format" value="x-suggestions" />

searx/webapp.py

 
         return resp
     return render('preferences.html',
-                  client=settings.get('client', None),
                   locales=settings['locales'],
                   current_locale=get_locale(),
                   current_language=lang or 'all',
     return render(
         'stats.html',
         stats=stats,
-        client=settings.get('client', None)
     )
 
 
 
     ret = render('opensearch.xml',
                  method=method,
-                 host=get_base_url(),
-                 client=settings['client'])
+                 host=get_base_url())
 
     resp = Response(response=ret,
                     status=200,