[enh] submittable suggestions

searx/static/css/style.css

 #results { margin-left: 10px; margin-top: 10px; }
 
 #suggestions { max-width: 50em;}
-#suggestions span { padding: 2px 6px; margin: 2px 4px;  font-size: 0.8em; display: inline-block; background: #E4E4E4; border-radius: 4px; }
+#suggestions form { display: inline; }
+#suggestions input { padding: 2px 6px; margin: 2px 4px;  font-size: 0.8em; display: inline-block; background: #E4E4E4; border-radius: 4px; border: 0; }

searx/templates/results.html

 </div>
 <div id="results">
     {% if suggestions %}
-    <div id="suggestions">Suggestions: {% for suggestion in suggestions %}<span>{{ suggestion }}</span>{% endfor %}</div>
+    <div id="suggestions">Suggestions: {% for suggestion in suggestions %}<form method="post" action=""><input type="hidden" name="q" value="{{suggestion}}"><input type="submit" value="{{ suggestion }}" /></form>{% endfor %}</div>
     {% endif %}
     <div>
         Number of results: {{ number_of_results }}