merge from lp:~giuseppeterrasi/ubuntu-it-ask/sn-question:
twitter, facebook, google plus button in question.html under comment box

forum/skins/light/templates/question.html

@@ -92,6 +92,14 @@
                 }
             </style>
         </noscript>
+<div id="fb-root"></div>
+    <script>
+      (function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; 
+      if (d.getElementById(id)) return; 
+      js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/it_IT/all.js#xfbml=1";
+      fjs.parentNode.insertBefore(js, fjs);
+      }(document, 'script', 'facebook-jssdk'));
+   </script>
 {% endblock %}
         
 {% block content %}
@@ -127,6 +135,20 @@
                                     {% contributors_info question %}
                             </div>
                             {% comments question request.user %}
+                            <!-- start share content -->
+<a href="https://twitter.com/share" class="twitter-share-button" data-lang="it" data-count="none" data-dnt="true">Tweet</a>
+<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
+<div class="g-plus" data-action="share" data-annotation="none"></div>
+<script type="text/javascript">
+  window.___gcfg = {lang: 'it'};
+ (function() {
+ var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
+ po.src = 'https://apis.google.com/js/plusone.js';
+ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
+ })();
+ </script>
+ <div class="fb-like" data-send="true" data-layout="button_count" data-width="450" data-show-faces="false"></div>
+ <!-- end share content -->
                           </div>                  
                         
                     </td>