Fix #206: changelog

changes/changelog.d/206.feature

+We now have a brand new instance settings interface in the front-end (#206)
+
+
+Instance settings interface
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Prior to this release, the only way to update instance settings (such as
+instance description, signup policy, federation configuration, etc.) was using
+the admin interface provided by Django (the back-end framework which power the API).
+
+This interface worked, but was not really-user friendly and intuitive.
+
+Starting from this release, we now offer a dedicated interface directly
+in the front-end. You can view and edit all your instance settings from here,
+assuming you have the required permissions.
+
+This interface is available at ``/manage/settings` and via link in the sidebar.