[enh] browser autocompletition turned off

searx/templates/index.html

 <div class="center">
     <h1>searx</h1>
     <form method="post" action="">
-        <input type="text" name="q" tabindex="1" />
+        <input type="text" name="q" tabindex="1" autocomplete="off" />
         <input type="submit" value="search" />
         <p>
         {% for engine in engines %}

searx/templates/results.html

 {% extends "base.html" %}
 {% block content %}
 <form method="post" action="">
-    <input type="text" name="q" value="{{ q }}"/>
+    <input type="text" name="q" value="{{ q }}" autocomplete="off" />
     <input type="submit" value="search" />
 </form>
 {% for result in results %}