[fix] google markup change - closes #489

searx/engines/google.py

 search_path = '/search'
 search_url = ('https://{hostname}' +
               search_path +
-              '?{query}&start={offset}&gbv=1&gws_rd=cr')
+              '?{query}&start={offset}&gbv=1&gws_rd=ssl')
 
 # other URLs
 map_hostname_start = 'maps.google.'
 images_path = '/images'
 
 # specific xpath variables
-results_xpath = '//li[@class="g"]'
+results_xpath = '//div[@class="g"]'
 url_xpath = './/h3/a/@href'
 title_xpath = './/h3'
 content_xpath = './/span[@class="st"]'

searx/tests/engines/test_google.py

         self.assertEqual(google.response(response), [])
 
         html = """
-        <li class="g">
+        <div class="g">
             <h3 class="r">
                 <a href="http://this.should.be.the.link/">
                     <b>This</b> is <b>the</b> title
                     </a>
                 </div>
             </div>
-        </li>
-        <li class="g">
+        </div>
+        <div class="g">
             <h3 class="r">
                 <a href="http://www.google.com/images?q=toto">
                     <b>This</b>
                 </a>
             </h3>
-        </li>
-        <li class="g">
+        </div>
+        <div class="g">
             <h3 class="r">
                 <a href="http://www.google.com/search?q=toto">
                     <b>This</b> is
                 </a>
             </h3>
-        </li>
-        <li class="g">
+        </div>
+        <div class="g">
             <h3 class="r">
                 <a href="€">
                     <b>This</b> is <b>the</b>
                 </a>
             </h3>
-        </li>
-        <li class="g">
+        </div>
+        <div class="g">
             <h3 class="r">
                 <a href="/url?q=url">
                     <b>This</b> is <b>the</b>
                 </a>
             </h3>
-        </li>
+        </div>
         <p class="_Bmc" style="margin:3px 8px">
             <a href="/search?num=20&amp;safe=off&amp;q=t&amp;revid=1754833769&amp;sa=X&amp;ei=-&amp;ved=">
                 suggestion <b>title</b>