relative redirect for sso login

templates/navbar_right.html

@@ -86,6 +86,6 @@
        <a href="{{appbuilder.get_url_for_login}}"><span class="material-icons">login</span>{{_("Log In")}}</a>
      </li>
      <li>
-       <a href="/unity"><span class="material-icons">login</span>{{_("Log In via SSO")}}</a>
+       <a href="./unity"><span class="material-icons">login</span>{{_("Log In via SSO")}}</a>
      </li>
    {% endif %}
\ No newline at end of file