[glade-web] Add news about 3.21.0

[Juan Pablo Ugarte <jpu src gnome org>]

commit da3898b46f5253e1889c120b695f29c759ba51f6
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Sat Dec 30 21:48:00 2017 -0300

    Add news about 3.21.0

 images/glade-main-page-thumb.png |  Bin 94436 -> 51963 bytes
 images/glade-main-page.png       |  Bin 200406 -> 195475 bytes
 newsitems.py                     |    7 +++++++
 3 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/images/glade-main-page-thumb.png b/images/glade-main-page-thumb.png
index 7e06df7..523aa47 100644
Binary files a/images/glade-main-page-thumb.png and b/images/glade-main-page-thumb.png differ
diff --git a/images/glade-main-page.png b/images/glade-main-page.png
index 52353f9..46da9de 100644
Binary files a/images/glade-main-page.png and b/images/glade-main-page.png differ
diff --git a/newsitems.py b/newsitems.py
index cdfd9c0..a45d02f 100644
--- a/newsitems.py
+++ b/newsitems.py
@@ -15,6 +15,13 @@ item = lambda *x: items.append(x)
 
 # http://news.gmane.org/gmane.comp.gnome.gtk%2B.python/
 
+item("""Glade 3.21.0 released""", (2017, 12, 30),
+     """
+    <p>Glade 3.21.0 is now available for download.</p>
+    <p>It has a new modern UI for an improved, more streamline GUI design workflow.</p>
+    <p> <a href="http://lists.ximian.com/pipermail/glade-devel/2017-December/002120.html";>3.21.0 release 
notes</a> for more details.</p>
+     """, 'Juan Pablo Ugarte')
+
 item("""Glade 3.20.2 released""", (2017, 11, 26),
      """
     <p>Glade 3.20.2 is now available for download.</p>