Updated change log

documentation/changelog.html

@@ -26,7 +26,9 @@
   <li>Implemented by-session content creation tools updates</li>
   <li>Added tabs editor (from admin)</li>
   <li>Added courses catalog</li>
-  <li>Added sessions history (optional access defined through admin settings, can be read-only)</li>
+  <li>Added a link to export course in the (platform administrator -> course list) (DT#4257)</li> 
+  <li>Added sessions history (optional access to previous sessions in read-only for students)</li>
+  <li>Added advanced search  in sessions: you can also search by session name, session category, tutor and visibility. (DT#5541)</li>
   <li>Added an option to configure courses as "auto-registered" (every user has it in his courses list and is automatically subscribed)</li>
   <li>Allowed password to be recovered using username *or* e-mail</li>
   <li>Added editable section to the registration form</li>