Some fixes and improve jinja2 template performance by reducing include statements

app/templates/auth/register.html.j2

@@ -30,6 +30,7 @@
           {{ wtf.render_field(form.submit, class_='width-100', material_icon='send') }}
         </div>
       </form>
+    </div>
   </div>
 </div>
 {% endblock page_content %}