Resolve "Apps should be able to register URLs for API stuff which are not mounted under /django/"

Closes #808 (closed)

aleksis/core/urls.py

@@ -417,6 +417,12 @@ for app_config in apps.app_configs.values():
         # Ignore exception as app just has no URLs
         pass  # noqa
 
+    try:
+        urlpatterns.append(path(f"app/{app_config.label}/", include(f"{app_config.name}.api_urls")))
+    except ModuleNotFoundError:
+        # Ignore exception as app just has no URLs
+        pass  # noqa
+
 urlpatterns.append(
     re_path(
         r"^(?P<url>.*)/$", TemplateView.as_view(template_name="core/vue_index.html"), name="vue_app"