Switching from CLA to DCO.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

development.php

@@ -17,9 +17,13 @@
       recognized and start helping out. Patches are always welcome
       as well as new ideas. We look forward to your contributions!
      </p>
-    <p>
-      Note that for legal reasons you need to <a href="/cla/">sign a CLA</a> before submitting patches or making commits.  We do not transfer copyright; the CLA simply formalizes our rights to use your open-source work in our open-source project.
-    </p>
+
+<p>Note that for legal reasons when you submit patches, you must each commit sign
+using <i>Signed-Off-By:…</i> for expressing your consent and compliance with the
+<a href="https://developercertificate.org/">DCO</a> – Developer Certificate of
+Origin. We do not transfer copyright. The DCO simply formalizes our rights to
+use your open-source work in our open-source project.</p>
+
     <p>
       While all are welcome, the Trinity team is currently looking for help in the following specific areas:
     </p>
@@ -49,7 +53,6 @@
     <a href="https://wiki.trinitydesktop.org/Project_RoadMap">Project Roadmap</a> <br>
     <a href="./mailinglist.php">Mailing Lists</a> <br>
     <a href="contributors.php">TDE Team</a><br/>
-    <a href="cla/">CLAs</a><br/>
   </div>
 
 <h3>Other</h3>