update CHANGELOG

CHANGELOG.md

@@ -25,7 +25,9 @@ This is the last Bootstrap-3 compatible release.
 ### Added (for new features, dependecies etc.)
 
 * Displaying and interacting with the entity state.
-* Change password functionality for users of the internal user source.
+* Change password functionality for users of the internal user source. Disable
+  with `BUILD_MODULE_USER_MANAGEMENT=DISABLED` and set the user realm with
+  `BUILD_MODULE_USER_MANAGEMENT_CHANGE_OWN_PASSWORD_REALM=CaosDB`.
 * Visually highlighted drop zones for properties and parents in the edit_mode.
 * two new field types for the form_elements module, `file` and `select`. See
   the module documentation for more information.