[fix] the search text input gets the focus automatically

searx/templates/search.html

 <form method="post" action="/" id="search_form">
 <div id="search_wrapper">
-    <input type="text" class="q" name="q" tabindex="1" autocomplete="off" {% if q %}value="{{ q }}"{% endif %}/>
+    <input type="text" id="q" class="q" name="q" tabindex="1" autocomplete="off" {% if q %}value="{{ q }}"{% endif %}/>
     <input type="submit" value="" id="search_submit" />
 </div>
     <div>