Turn off autocomplete on search form

Author: jpadilla

docs_theme/base.html

@@ -69,7 +69,7 @@ <h3 id="myModalLabel">Documentation search</h3>
           </div>
 
           <div class="modal-body">
-            <form role="form">
+            <form role="form" autocomplete="off">
               <div class="form-group">
                 <input type="text" name="q" class="form-control" placeholder="Search..." id="mkdocs-search-query">
               </div>