updated admin console release notes

Change-Id: I9cc93de97d1695ad3f6510481a5108e42712a703

java/com.sap.sailing.www/release_notes_admin.html

@@ -29,6 +29,12 @@
                             The new end points support resolving, creation and deletion of user groups, as well as adding 
                             and removing users and roles to and from user groups.
                         </li>
+                        <li>The Device Configurations table for the Race Manager App now updates its underlying data
+                            properly when a configuration is edited locally.
+                        </li>
+                        <li>Blue flag up/down times can be cleared in the AdminConsole now</li>
+                        <li>Users can now create media tracks if they have the permissions based on the ownership that
+                            will result from the creation process.</li>
                     </ul>
                     <h2 class="articleSubheadline">May 2019</h2>
                     <ul class="bulletList">