Move thanks.adoc from Log4j to here

_includes/navbar.html

@@ -28,20 +28,6 @@
             <ul class="nav">
                 <li><a href="/xml/ns">XML Schemas</a></li>
             </ul>
-            <ul class="nav pull-right">
-                <li class="dropdown">
-                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Apache<b class="caret"></b></a>
-                    <ul class="dropdown-menu">
-                        <li><a target="_blank" href="https://www.apache.org/">Home</a></li>
-                        <li><a target="_blank" href="https://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
-                        <li><a target="_blank" href="https://www.apache.org/licenses/">License</a></li>
-                        <li><a target="_blank" href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-                        <li><a target="_blank" href="https://www.apache.org/events/current-event.html">Current Events</a></li>
-                        <li><a target="_blank" href="https://www.apache.org/security/">Security</a></li>
-                        <li><a target="_blank" href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy</a></li>
-                    </ul>
-                </li>
-            </ul>
             <ul class="nav pull-right">
                 <li><a href="/blog">Blog</a></li>
             </ul>

support.adoc

@@ -138,6 +138,22 @@ In either case, while the Apache Logging Services project thanks you for your su
 * https://github.com/rgoers[Ralph Goers]
 * https://github.com/vy[Volkan Yazıcı]
 
+[#sponsors]
+=== Sponsors
+
+There are a handful of tools that developers in the community use; some are open-source and some are commercial.
+We would like to take this opportunity to thank our sponsors providing the project maintainers access to these tools:
+
+* https://www.jetbrains.com[JetBrains] with its https://www.jetbrains.com/idea/[Intellij IDEA]
++
+image::img/sponsors/intellij.png[alt="IntelliJ IDEA",width=200]
+
+* https://www.yourkit.com[YourKit] with its full-featured https://www.yourkit.com/java/profiler[Java Profiler]
++
+image::img/sponsors/yourkit.png[alt="YourKit",width=200]
+
+There are several https://www.apache.org/foundation/thanks.html[sponsors supporting ASF].
+
 [#commercial]
 == Third-party commercial support