docs: responsive web design website

This patch migrate the layout to a responsive web design one.

* Fixing the layout of all pages to be fully responsive
* Adding panels around "Recent commints" and "Recent discussion"
* Adding fonts for glyphs in buttons

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/docs/news.html b/docs/news.html
index ee2e9c4..2f1b168 100644
--- a/docs/news.html
+++ b/docs/news.html
@@ -1,5 +1,8 @@
 <!--#include file="header.html" -->
 
+<div class="row">
+<div class="col-sm-10 col-sm-offset-1">
+
 <h2>News</h2>
 
 <p>
@@ -1314,5 +1317,8 @@
 
 </ul>
 
+</div><!--/.col-sm-10 -->
+</div><!--/.row -->
+
 <!--#include file="footer.html" -->