[guadec-web/oscp-2019] Add Codethink to silver sponsors

[Tom Tryfonidis <tomtryf src gnome org>]

commit c306a655fd0f4ae82a6addd83b1cda5f8883d54d
Author: Tom Tryfonidis <tomtryf gmail com>
Date:   Thu Apr 18 21:37:33 2019 +0300

    Add Codethink to silver sponsors

 content/images/sponsors/codethink.png | Bin 0 -> 44962 bytes
 content/pages/sponsors.md             |   6 ++++++
 pelicanconf.py                        |   4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/content/images/sponsors/codethink.png b/content/images/sponsors/codethink.png
new file mode 100644
index 0000000..fd87a16
Binary files /dev/null and b/content/images/sponsors/codethink.png differ
diff --git a/content/pages/sponsors.md b/content/pages/sponsors.md
index 12a2ba4..2123f08 100644
--- a/content/pages/sponsors.md
+++ b/content/pages/sponsors.md
@@ -7,4 +7,10 @@ GUADEC could not happen without the support of sponsors. We are immensely gratef
 
 If you are interested in sponsoring this year’s GUADEC, see [how to sponsor](how-to-sponsor.html) page or 
the [GUADEC 2019 sponsorship brochure](/documents/conference-brochure-2019-web.pdf){:target="_blank"}.
 
+## Silver
+
+&nbsp; | &nbsp;
+     - | -
+       |
+![Codethink Logo](/images/sponsors/codethink.png){: .sponsorlogo } | 
[Codethink](https://www.codethink.co.uk) specialises in system-level software engineering to enable advanced 
technical applications, working across a range of industries including automotive, medical, telecoms and 
finance. Our customers are international-scale organizations who seek competitive edge through design of 
enterprise appliances and embedded systems which are faster, smaller, more secure, more up-to-date, or more 
advanced than their competitors.As experts in Free and Open Source Software, we help customers take maximum 
advantage of the knowledge and technologies developed in upstream communities including GNOME. Vala, GLib, 
GTK+, Glade, Flatpak, Tracker, and Gstreamer are just a few of the GNOME technologies that Codethink 
developers have hacked on in recent years.
 
diff --git a/pelicanconf.py b/pelicanconf.py
index 18e2b66..f8d4638 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -128,14 +128,14 @@ SPONSORS = (
     #('Endless', 'https://endlessos.com/', 'endless.png'),
     #('Canonical', 'https://www.ubuntu.com', 'canonical.png'),
     #('OpenSUSE', 'http://www.opensuse.org/', 'opensuse.png'),
-    #('Codethink', 'https://www.codethink.co.uk/', 'codethink.png'),
+    ('Codethink', 'https://www.codethink.co.uk/', 'codethink.png'),
     #('GitLab', 'https://gitlab.com', 'gitlab.png'),
     #('Igalia', 'https://www.igalia.com/', 'igalia.png'),
     #('Arm', 'https://www.arm.com/', 'arm.png'),
     # ('Google', 'https://opensource.google.com/', 'google.png'),
     # ('Mozilla Foundation', 'http://www.mozilla.org/', 'mozilla.png'),
     # ('Collabora', 'https://www.collabora.com/', 'collabora.png'),
-     ('', '', 'placeholder.png'),
+    # ('', '', 'placeholder.png'),
 )
 
 COORGANIZER = (